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Finding the Fourth Proportional to 91,998.78, 137,998.17 and 29,669.28

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Solution

The fourth proportional to 91,998.78, 137,998.17 and 29,669.28 is: 44,503.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,998.78 : 137,998.17 = 29,669.28 : x
  2. Step 2: Convert to fraction form
    91,998.78/137,998.17 = 29,669.28/x
  3. Step 3: Cross multiply
    91,998.78x = 137,998.17 × 29,669.28
  4. Step 4: Simplify right side
    91,998.78x = 4,094,306,345.22
  5. Step 5: Solve for x
    x = 4,094,306,345.22/91,998.78
  6. Step 6: Final answer
    x = 44,503.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.