Home / 90,126.84-124,379.76-51,892.20

Finding the Fourth Proportional to 90,126.84, 124,379.76 and 51,892.20

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Solution

The fourth proportional to 90,126.84, 124,379.76 and 51,892.20 is: 71,613.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,126.84 : 124,379.76 = 51,892.20 : x
  2. Step 2: Convert to fraction form
    90,126.84/124,379.76 = 51,892.20/x
  3. Step 3: Cross multiply
    90,126.84x = 124,379.76 × 51,892.20
  4. Step 4: Simplify right side
    90,126.84x = 6,454,339,381.87
  5. Step 5: Solve for x
    x = 6,454,339,381.87/90,126.84
  6. Step 6: Final answer
    x = 71,613.95

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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.