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Finding the Fourth Proportional to 86,363.29, 129,562.42 and 36,443.51

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Solution

The fourth proportional to 86,363.29, 129,562.42 and 36,443.51 is: 54,672.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,363.29 : 129,562.42 = 36,443.51 : x
  2. Step 2: Convert to fraction form
    86,363.29/129,562.42 = 36,443.51/x
  3. Step 3: Cross multiply
    86,363.29x = 129,562.42 × 36,443.51
  4. Step 4: Simplify right side
    86,363.29x = 4,721,709,348.89
  5. Step 5: Solve for x
    x = 4,721,709,348.89/86,363.29
  6. Step 6: Final answer
    x = 54,672.64

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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.