Home / 67,620.61-93,335.25-39,331.77

Finding the Fourth Proportional to 67,620.61, 93,335.25 and 39,331.77

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Solution

The fourth proportional to 67,620.61, 93,335.25 and 39,331.77 is: 54,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,620.61 : 93,335.25 = 39,331.77 : x
  2. Step 2: Convert to fraction form
    67,620.61/93,335.25 = 39,331.77/x
  3. Step 3: Cross multiply
    67,620.61x = 93,335.25 × 39,331.77
  4. Step 4: Simplify right side
    67,620.61x = 3,671,040,585.89
  5. Step 5: Solve for x
    x = 3,671,040,585.89/67,620.61
  6. Step 6: Final answer
    x = 54,288.78

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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.