Home / 67,778.13-93,542.13-39,485.64

Finding the Fourth Proportional to 67,778.13, 93,542.13 and 39,485.64

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Solution

The fourth proportional to 67,778.13, 93,542.13 and 39,485.64 is: 54,495.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,778.13 : 93,542.13 = 39,485.64 : x
  2. Step 2: Convert to fraction form
    67,778.13/93,542.13 = 39,485.64/x
  3. Step 3: Cross multiply
    67,778.13x = 93,542.13 × 39,485.64
  4. Step 4: Simplify right side
    67,778.13x = 3,693,570,870.01
  5. Step 5: Solve for x
    x = 3,693,570,870.01/67,778.13
  6. Step 6: Final answer
    x = 54,495.02

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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.