Home / 87,428.58-120,695.01-57,260.13

Finding the Fourth Proportional to 87,428.58, 120,695.01 and 57,260.13

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Solution

The fourth proportional to 87,428.58, 120,695.01 and 57,260.13 is: 79,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,428.58 : 120,695.01 = 57,260.13 : x
  2. Step 2: Convert to fraction form
    87,428.58/120,695.01 = 57,260.13/x
  3. Step 3: Cross multiply
    87,428.58x = 120,695.01 × 57,260.13
  4. Step 4: Simplify right side
    87,428.58x = 6,911,011,962.95
  5. Step 5: Solve for x
    x = 6,911,011,962.95/87,428.58
  6. Step 6: Final answer
    x = 79,047.51

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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.