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Finding the Fourth Proportional to 86,468.88, 129,707.30 and 26,493.06

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Solution

The fourth proportional to 86,468.88, 129,707.30 and 26,493.06 is: 39,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,468.88 : 129,707.30 = 26,493.06 : x
  2. Step 2: Convert to fraction form
    86,468.88/129,707.30 = 26,493.06/x
  3. Step 3: Cross multiply
    86,468.88x = 129,707.30 × 26,493.06
  4. Step 4: Simplify right side
    86,468.88x = 3,436,343,148.87
  5. Step 5: Solve for x
    x = 3,436,343,148.87/86,468.88
  6. Step 6: Final answer
    x = 39,740.81

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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.