Home / 78,427.68-108,230.85-42,617.71

Finding the Fourth Proportional to 78,427.68, 108,230.85 and 42,617.71

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Solution

The fourth proportional to 78,427.68, 108,230.85 and 42,617.71 is: 58,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.68 : 108,230.85 = 42,617.71 : x
  2. Step 2: Convert to fraction form
    78,427.68/108,230.85 = 42,617.71/x
  3. Step 3: Cross multiply
    78,427.68x = 108,230.85 × 42,617.71
  4. Step 4: Simplify right side
    78,427.68x = 4,612,551,113.64
  5. Step 5: Solve for x
    x = 4,612,551,113.64/78,427.68
  6. Step 6: Final answer
    x = 58,812.80

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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.