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Finding the Fourth Proportional to 86,471.51, 129,711.24 and 26,495.69

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Solution

The fourth proportional to 86,471.51, 129,711.24 and 26,495.69 is: 39,744.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,471.51 : 129,711.24 = 26,495.69 : x
  2. Step 2: Convert to fraction form
    86,471.51/129,711.24 = 26,495.69/x
  3. Step 3: Cross multiply
    86,471.51x = 129,711.24 × 26,495.69
  4. Step 4: Simplify right side
    86,471.51x = 3,436,788,156.00
  5. Step 5: Solve for x
    x = 3,436,788,156.00/86,471.51
  6. Step 6: Final answer
    x = 39,744.75

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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.