Home / 78,226.20-117,350.10-28,294.20

Finding the Fourth Proportional to 78,226.20, 117,350.10 and 28,294.20

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Solution

The fourth proportional to 78,226.20, 117,350.10 and 28,294.20 is: 42,445.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.20 : 117,350.10 = 28,294.20 : x
  2. Step 2: Convert to fraction form
    78,226.20/117,350.10 = 28,294.20/x
  3. Step 3: Cross multiply
    78,226.20x = 117,350.10 × 28,294.20
  4. Step 4: Simplify right side
    78,226.20x = 3,320,327,199.42
  5. Step 5: Solve for x
    x = 3,320,327,199.42/78,226.20
  6. Step 6: Final answer
    x = 42,445.21

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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.