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Finding the Fourth Proportional to 48,659.40, 72,902.70 and 30,169.80

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Solution

The fourth proportional to 48,659.40, 72,902.70 and 30,169.80 is: 45,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,659.40 : 72,902.70 = 30,169.80 : x
  2. Step 2: Convert to fraction form
    48,659.40/72,902.70 = 30,169.80/x
  3. Step 3: Cross multiply
    48,659.40x = 72,902.70 × 30,169.80
  4. Step 4: Simplify right side
    48,659.40x = 2,199,459,878.46
  5. Step 5: Solve for x
    x = 2,199,459,878.46/48,659.40
  6. Step 6: Final answer
    x = 45,201.13

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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.