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Finding the Fourth Proportional to 48,460.70, 72,691.05 and 47,999.90

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Solution

The fourth proportional to 48,460.70, 72,691.05 and 47,999.90 is: 71,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,460.70 : 72,691.05 = 47,999.90 : x
  2. Step 2: Convert to fraction form
    48,460.70/72,691.05 = 47,999.90/x
  3. Step 3: Cross multiply
    48,460.70x = 72,691.05 × 47,999.90
  4. Step 4: Simplify right side
    48,460.70x = 3,489,163,130.90
  5. Step 5: Solve for x
    x = 3,489,163,130.90/48,460.70
  6. Step 6: Final answer
    x = 71,999.85

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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.