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Finding the Fourth Proportional to 86,353.60, 129,547.87 and 36,433.82

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Solution

The fourth proportional to 86,353.60, 129,547.87 and 36,433.82 is: 54,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,353.60 : 129,547.87 = 36,433.82 : x
  2. Step 2: Convert to fraction form
    86,353.60/129,547.87 = 36,433.82/x
  3. Step 3: Cross multiply
    86,353.60x = 129,547.87 × 36,433.82
  4. Step 4: Simplify right side
    86,353.60x = 4,719,923,594.79
  5. Step 5: Solve for x
    x = 4,719,923,594.79/86,353.60
  6. Step 6: Final answer
    x = 54,658.10

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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.