Home / 42,002.20-57,966.18-23,139.40

Finding the Fourth Proportional to 42,002.20, 57,966.18 and 23,139.40

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Solution

The fourth proportional to 42,002.20, 57,966.18 and 23,139.40 is: 31,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,002.20 : 57,966.18 = 23,139.40 : x
  2. Step 2: Convert to fraction form
    42,002.20/57,966.18 = 23,139.40/x
  3. Step 3: Cross multiply
    42,002.20x = 57,966.18 × 23,139.40
  4. Step 4: Simplify right side
    42,002.20x = 1,341,302,625.49
  5. Step 5: Solve for x
    x = 1,341,302,625.49/42,002.20
  6. Step 6: Final answer
    x = 31,934.10

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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.