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Finding the Fourth Proportional to 80,493.60, 120,740.40 and 49,000.80

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Solution

The fourth proportional to 80,493.60, 120,740.40 and 49,000.80 is: 73,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,493.60 : 120,740.40 = 49,000.80 : x
  2. Step 2: Convert to fraction form
    80,493.60/120,740.40 = 49,000.80/x
  3. Step 3: Cross multiply
    80,493.60x = 120,740.40 × 49,000.80
  4. Step 4: Simplify right side
    80,493.60x = 5,916,376,192.32
  5. Step 5: Solve for x
    x = 5,916,376,192.32/80,493.60
  6. Step 6: Final answer
    x = 73,501.20

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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.