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Finding the Fourth Proportional to 86,490.72, 129,733.68 and 24,159.52

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Solution

The fourth proportional to 86,490.72, 129,733.68 and 24,159.52 is: 36,238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,490.72 : 129,733.68 = 24,159.52 : x
  2. Step 2: Convert to fraction form
    86,490.72/129,733.68 = 24,159.52/x
  3. Step 3: Cross multiply
    86,490.72x = 129,733.68 × 24,159.52
  4. Step 4: Simplify right side
    86,490.72x = 3,134,303,436.63
  5. Step 5: Solve for x
    x = 3,134,303,436.63/86,490.72
  6. Step 6: Final answer
    x = 36,238.61

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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.