Home / 83,725.20-125,587.80-77,820.30

Finding the Fourth Proportional to 83,725.20, 125,587.80 and 77,820.30

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Solution

The fourth proportional to 83,725.20, 125,587.80 and 77,820.30 is: 116,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,725.20 : 125,587.80 = 77,820.30 : x
  2. Step 2: Convert to fraction form
    83,725.20/125,587.80 = 77,820.30/x
  3. Step 3: Cross multiply
    83,725.20x = 125,587.80 × 77,820.30
  4. Step 4: Simplify right side
    83,725.20x = 9,773,280,272.34
  5. Step 5: Solve for x
    x = 9,773,280,272.34/83,725.20
  6. Step 6: Final answer
    x = 116,730.45

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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.