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Finding the Fourth Proportional to 89,072.80, 133,609.20 and 47,600.80

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Solution

The fourth proportional to 89,072.80, 133,609.20 and 47,600.80 is: 71,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,072.80 : 133,609.20 = 47,600.80 : x
  2. Step 2: Convert to fraction form
    89,072.80/133,609.20 = 47,600.80/x
  3. Step 3: Cross multiply
    89,072.80x = 133,609.20 × 47,600.80
  4. Step 4: Simplify right side
    89,072.80x = 6,359,904,807.36
  5. Step 5: Solve for x
    x = 6,359,904,807.36/89,072.80
  6. Step 6: Final answer
    x = 71,401.20

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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.