Home / 71,770.20-107,612.10-36,778.20

Finding the Fourth Proportional to 71,770.20, 107,612.10 and 36,778.20

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Solution

The fourth proportional to 71,770.20, 107,612.10 and 36,778.20 is: 55,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,770.20 : 107,612.10 = 36,778.20 : x
  2. Step 2: Convert to fraction form
    71,770.20/107,612.10 = 36,778.20/x
  3. Step 3: Cross multiply
    71,770.20x = 107,612.10 × 36,778.20
  4. Step 4: Simplify right side
    71,770.20x = 3,957,779,336.22
  5. Step 5: Solve for x
    x = 3,957,779,336.22/71,770.20
  6. Step 6: Final answer
    x = 55,145.16

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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.