Home / 83,909.68-125,886.46-31,319.62

Finding the Fourth Proportional to 83,909.68, 125,886.46 and 31,319.62

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Solution

The fourth proportional to 83,909.68, 125,886.46 and 31,319.62 is: 46,987.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,909.68 : 125,886.46 = 31,319.62 : x
  2. Step 2: Convert to fraction form
    83,909.68/125,886.46 = 31,319.62/x
  3. Step 3: Cross multiply
    83,909.68x = 125,886.46 × 31,319.62
  4. Step 4: Simplify right side
    83,909.68x = 3,942,716,090.35
  5. Step 5: Solve for x
    x = 3,942,716,090.35/83,909.68
  6. Step 6: Final answer
    x = 46,987.62

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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.