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Finding the Fourth Proportional to 86,999.68, 130,494.71 and 23,815.22

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Solution

The fourth proportional to 86,999.68, 130,494.71 and 23,815.22 is: 35,721.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.68 : 130,494.71 = 23,815.22 : x
  2. Step 2: Convert to fraction form
    86,999.68/130,494.71 = 23,815.22/x
  3. Step 3: Cross multiply
    86,999.68x = 130,494.71 × 23,815.22
  4. Step 4: Simplify right side
    86,999.68x = 3,107,760,613.26
  5. Step 5: Solve for x
    x = 3,107,760,613.26/86,999.68
  6. Step 6: Final answer
    x = 35,721.52

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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.