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Finding the Fourth Proportional to 86,468.40, 129,740.72 and 36,582.92

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Solution

The fourth proportional to 86,468.40, 129,740.72 and 36,582.92 is: 54,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,468.40 : 129,740.72 = 36,582.92 : x
  2. Step 2: Convert to fraction form
    86,468.40/129,740.72 = 36,582.92/x
  3. Step 3: Cross multiply
    86,468.40x = 129,740.72 × 36,582.92
  4. Step 4: Simplify right side
    86,468.40x = 4,746,294,380.50
  5. Step 5: Solve for x
    x = 4,746,294,380.50/86,468.40
  6. Step 6: Final answer
    x = 54,890.51

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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.