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Finding the Fourth Proportional to 86,344.95, 129,531.26 and 36,432.39

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Solution

The fourth proportional to 86,344.95, 129,531.26 and 36,432.39 is: 54,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,344.95 : 129,531.26 = 36,432.39 : x
  2. Step 2: Convert to fraction form
    86,344.95/129,531.26 = 36,432.39/x
  3. Step 3: Cross multiply
    86,344.95x = 129,531.26 × 36,432.39
  4. Step 4: Simplify right side
    86,344.95x = 4,719,133,381.51
  5. Step 5: Solve for x
    x = 4,719,133,381.51/86,344.95
  6. Step 6: Final answer
    x = 54,654.42

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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.