Home / 83,820.10-125,730.15-39,432.10

Finding the Fourth Proportional to 83,820.10, 125,730.15 and 39,432.10

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Solution

The fourth proportional to 83,820.10, 125,730.15 and 39,432.10 is: 59,148.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,820.10 : 125,730.15 = 39,432.10 : x
  2. Step 2: Convert to fraction form
    83,820.10/125,730.15 = 39,432.10/x
  3. Step 3: Cross multiply
    83,820.10x = 125,730.15 × 39,432.10
  4. Step 4: Simplify right side
    83,820.10x = 4,957,803,847.82
  5. Step 5: Solve for x
    x = 4,957,803,847.82/83,820.10
  6. Step 6: Final answer
    x = 59,148.15

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1.5x scale

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.