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Finding the Fourth Proportional to 86,654.40, 129,975.66 and 24,324.90

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Solution

The fourth proportional to 86,654.40, 129,975.66 and 24,324.90 is: 36,485.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,654.40 : 129,975.66 = 24,324.90 : x
  2. Step 2: Convert to fraction form
    86,654.40/129,975.66 = 24,324.90/x
  3. Step 3: Cross multiply
    86,654.40x = 129,975.66 × 24,324.90
  4. Step 4: Simplify right side
    86,654.40x = 3,161,644,931.93
  5. Step 5: Solve for x
    x = 3,161,644,931.93/86,654.40
  6. Step 6: Final answer
    x = 36,485.68

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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.