Home / 86,209.90-129,322.14-23,039.62

Finding the Fourth Proportional to 86,209.90, 129,322.14 and 23,039.62

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Solution

The fourth proportional to 86,209.90, 129,322.14 and 23,039.62 is: 34,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209.90 : 129,322.14 = 23,039.62 : x
  2. Step 2: Convert to fraction form
    86,209.90/129,322.14 = 23,039.62/x
  3. Step 3: Cross multiply
    86,209.90x = 129,322.14 × 23,039.62
  4. Step 4: Simplify right side
    86,209.90x = 2,979,532,963.19
  5. Step 5: Solve for x
    x = 2,979,532,963.19/86,209.90
  6. Step 6: Final answer
    x = 34,561.38

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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.