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Finding the Fourth Proportional to 80,475.10, 120,712.65 and 59,739.10

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Solution

The fourth proportional to 80,475.10, 120,712.65 and 59,739.10 is: 89,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,475.10 : 120,712.65 = 59,739.10 : x
  2. Step 2: Convert to fraction form
    80,475.10/120,712.65 = 59,739.10/x
  3. Step 3: Cross multiply
    80,475.10x = 120,712.65 × 59,739.10
  4. Step 4: Simplify right side
    80,475.10x = 7,211,265,069.62
  5. Step 5: Solve for x
    x = 7,211,265,069.62/80,475.10
  6. Step 6: Final answer
    x = 89,608.65

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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.