Home / 86,109.68-129,156.32-29,947.52

Finding the Fourth Proportional to 86,109.68, 129,156.32 and 29,947.52

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Solution

The fourth proportional to 86,109.68, 129,156.32 and 29,947.52 is: 44,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,109.68 : 129,156.32 = 29,947.52 : x
  2. Step 2: Convert to fraction form
    86,109.68/129,156.32 = 29,947.52/x
  3. Step 3: Cross multiply
    86,109.68x = 129,156.32 × 29,947.52
  4. Step 4: Simplify right side
    86,109.68x = 3,867,911,874.09
  5. Step 5: Solve for x
    x = 3,867,911,874.09/86,109.68
  6. Step 6: Final answer
    x = 44,918.43

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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.