Home / 42,880.79-59,155.57-27,778.55

Finding the Fourth Proportional to 42,880.79, 59,155.57 and 27,778.55

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Solution

The fourth proportional to 42,880.79, 59,155.57 and 27,778.55 is: 38,321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,880.79 : 59,155.57 = 27,778.55 : x
  2. Step 2: Convert to fraction form
    42,880.79/59,155.57 = 27,778.55/x
  3. Step 3: Cross multiply
    42,880.79x = 59,155.57 × 27,778.55
  4. Step 4: Simplify right side
    42,880.79x = 1,643,255,541.71
  5. Step 5: Solve for x
    x = 1,643,255,541.71/42,880.79
  6. Step 6: Final answer
    x = 38,321.48

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Half scale
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Double scale
Find fourth proportional to 42,881.79, 59,156.95 and 27,779.55
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.