Home / 67,901.57-93,712.47-39,221.20

Finding the Fourth Proportional to 67,901.57, 93,712.47 and 39,221.20

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Solution

The fourth proportional to 67,901.57, 93,712.47 and 39,221.20 is: 54,130.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,901.57 : 93,712.47 = 39,221.20 : x
  2. Step 2: Convert to fraction form
    67,901.57/93,712.47 = 39,221.20/x
  3. Step 3: Cross multiply
    67,901.57x = 93,712.47 × 39,221.20
  4. Step 4: Simplify right side
    67,901.57x = 3,675,515,332.26
  5. Step 5: Solve for x
    x = 3,675,515,332.26/67,901.57
  6. Step 6: Final answer
    x = 54,130.05

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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.