Home / 90,340.17-124,712.77-63,505.68

Finding the Fourth Proportional to 90,340.17, 124,712.77 and 63,505.68

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Solution

The fourth proportional to 90,340.17, 124,712.77 and 63,505.68 is: 87,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,340.17 : 124,712.77 = 63,505.68 : x
  2. Step 2: Convert to fraction form
    90,340.17/124,712.77 = 63,505.68/x
  3. Step 3: Cross multiply
    90,340.17x = 124,712.77 × 63,505.68
  4. Step 4: Simplify right side
    90,340.17x = 7,919,969,263.53
  5. Step 5: Solve for x
    x = 7,919,969,263.53/90,340.17
  6. Step 6: Final answer
    x = 87,668.30

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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.