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Finding the Fourth Proportional to 86,720.65, 130,053.29 and 27,542.48

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Solution

The fourth proportional to 86,720.65, 130,053.29 and 27,542.48 is: 41,304.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.65 : 130,053.29 = 27,542.48 : x
  2. Step 2: Convert to fraction form
    86,720.65/130,053.29 = 27,542.48/x
  3. Step 3: Cross multiply
    86,720.65x = 130,053.29 × 27,542.48
  4. Step 4: Simplify right side
    86,720.65x = 3,581,990,138.76
  5. Step 5: Solve for x
    x = 3,581,990,138.76/86,720.65
  6. Step 6: Final answer
    x = 41,304.93

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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.