Home / 90,165,721.18-124,428,935.01-48,912,613.57

Finding the Fourth Proportional to 90,165,721.18, 124,428,935.01 and 48,912,613.57

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Solution

The fourth proportional to 90,165,721.18, 124,428,935.01 and 48,912,613.57 is: 67,499,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,165,721.18 : 124,428,935.01 = 48,912,613.57 : x
  2. Step 2: Convert to fraction form
    90,165,721.18/124,428,935.01 = 48,912,613.57/x
  3. Step 3: Cross multiply
    90,165,721.18x = 124,428,935.01 × 48,912,613.57
  4. Step 4: Simplify right side
    90,165,721.18x = 6,086,144,415,070,774
  5. Step 5: Solve for x
    x = 6,086,144,415,070,774/90,165,721.18
  6. Step 6: Final answer
    x = 67,499,536.80

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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.