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Finding the Fourth Proportional to 90,668.88, 125,082.72 and 60,424.68

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Solution

The fourth proportional to 90,668.88, 125,082.72 and 60,424.68 is: 83,359.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,668.88 : 125,082.72 = 60,424.68 : x
  2. Step 2: Convert to fraction form
    90,668.88/125,082.72 = 60,424.68/x
  3. Step 3: Cross multiply
    90,668.88x = 125,082.72 × 60,424.68
  4. Step 4: Simplify right side
    90,668.88x = 7,558,083,329.53
  5. Step 5: Solve for x
    x = 7,558,083,329.53/90,668.88
  6. Step 6: Final answer
    x = 83,359.18

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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.