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Finding the Fourth Proportional to 86,041.68, 129,057.88 and 26,870.56

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Solution

The fourth proportional to 86,041.68, 129,057.88 and 26,870.56 is: 40,304.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,041.68 : 129,057.88 = 26,870.56 : x
  2. Step 2: Convert to fraction form
    86,041.68/129,057.88 = 26,870.56/x
  3. Step 3: Cross multiply
    86,041.68x = 129,057.88 × 26,870.56
  4. Step 4: Simplify right side
    86,041.68x = 3,467,857,508.01
  5. Step 5: Solve for x
    x = 3,467,857,508.01/86,041.68
  6. Step 6: Final answer
    x = 40,304.39

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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.