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Finding the Fourth Proportional to 89,843.70, 123,985.17 and 49,559.16

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Solution

The fourth proportional to 89,843.70, 123,985.17 and 49,559.16 is: 68,392.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,843.70 : 123,985.17 = 49,559.16 : x
  2. Step 2: Convert to fraction form
    89,843.70/123,985.17 = 49,559.16/x
  3. Step 3: Cross multiply
    89,843.70x = 123,985.17 × 49,559.16
  4. Step 4: Simplify right side
    89,843.70x = 6,144,600,877.66
  5. Step 5: Solve for x
    x = 6,144,600,877.66/89,843.70
  6. Step 6: Final answer
    x = 68,392.12

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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.