Home / 80,761,459.80-121,142,189.70-48,512,832.60

Finding the Fourth Proportional to 80,761,459.80, 121,142,189.70 and 48,512,832.60

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Solution

The fourth proportional to 80,761,459.80, 121,142,189.70 and 48,512,832.60 is: 72,769,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,761,459.80 : 121,142,189.70 = 48,512,832.60 : x
  2. Step 2: Convert to fraction form
    80,761,459.80/121,142,189.70 = 48,512,832.60/x
  3. Step 3: Cross multiply
    80,761,459.80x = 121,142,189.70 × 48,512,832.60
  4. Step 4: Simplify right side
    80,761,459.80x = 5,876,950,769,713,545
  5. Step 5: Solve for x
    x = 5,876,950,769,713,545/80,761,459.80
  6. Step 6: Final answer
    x = 72,769,248.90

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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.