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Finding the Fourth Proportional to 91,572.80, 137,316.26 and 35,439.42

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Solution

The fourth proportional to 91,572.80, 137,316.26 and 35,439.42 is: 53,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,572.80 : 137,316.26 = 35,439.42 : x
  2. Step 2: Convert to fraction form
    91,572.80/137,316.26 = 35,439.42/x
  3. Step 3: Cross multiply
    91,572.80x = 137,316.26 × 35,439.42
  4. Step 4: Simplify right side
    91,572.80x = 4,866,408,610.97
  5. Step 5: Solve for x
    x = 4,866,408,610.97/91,572.80
  6. Step 6: Final answer
    x = 53,142.51

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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.