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Finding the Fourth Proportional to 86,353.67, 129,547.97 and 36,433.89

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Solution

The fourth proportional to 86,353.67, 129,547.97 and 36,433.89 is: 54,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,353.67 : 129,547.97 = 36,433.89 : x
  2. Step 2: Convert to fraction form
    86,353.67/129,547.97 = 36,433.89/x
  3. Step 3: Cross multiply
    86,353.67x = 129,547.97 × 36,433.89
  4. Step 4: Simplify right side
    86,353.67x = 4,719,936,306.53
  5. Step 5: Solve for x
    x = 4,719,936,306.53/86,353.67
  6. Step 6: Final answer
    x = 54,658.20

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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.