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Finding the Fourth Proportional to 86,479.71, 129,708.83 and 23,304.77

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Solution

The fourth proportional to 86,479.71, 129,708.83 and 23,304.77 is: 34,954.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,479.71 : 129,708.83 = 23,304.77 : x
  2. Step 2: Convert to fraction form
    86,479.71/129,708.83 = 23,304.77/x
  3. Step 3: Cross multiply
    86,479.71x = 129,708.83 × 23,304.77
  4. Step 4: Simplify right side
    86,479.71x = 3,022,834,832.65
  5. Step 5: Solve for x
    x = 3,022,834,832.65/86,479.71
  6. Step 6: Final answer
    x = 34,954.27

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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.