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Finding the Fourth Proportional to 86,474.87, 129,737.41 and 35,864.61

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Solution

The fourth proportional to 86,474.87, 129,737.41 and 35,864.61 is: 53,807.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,474.87 : 129,737.41 = 35,864.61 : x
  2. Step 2: Convert to fraction form
    86,474.87/129,737.41 = 35,864.61/x
  3. Step 3: Cross multiply
    86,474.87x = 129,737.41 × 35,864.61
  4. Step 4: Simplify right side
    86,474.87x = 4,652,981,612.06
  5. Step 5: Solve for x
    x = 4,652,981,612.06/86,474.87
  6. Step 6: Final answer
    x = 53,807.33

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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.