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Finding the Fourth Proportional to 48,747.70, 73,012.20 and 39,999.70

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Solution

The fourth proportional to 48,747.70, 73,012.20 and 39,999.70 is: 59,909.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,747.70 : 73,012.20 = 39,999.70 : x
  2. Step 2: Convert to fraction form
    48,747.70/73,012.20 = 39,999.70/x
  3. Step 3: Cross multiply
    48,747.70x = 73,012.20 × 39,999.70
  4. Step 4: Simplify right side
    48,747.70x = 2,920,466,096.34
  5. Step 5: Solve for x
    x = 2,920,466,096.34/48,747.70
  6. Step 6: Final answer
    x = 59,909.82

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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.