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Finding the Fourth Proportional to 72,207.40, 108,311.10 and 48,587.80

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Solution

The fourth proportional to 72,207.40, 108,311.10 and 48,587.80 is: 72,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,207.40 : 108,311.10 = 48,587.80 : x
  2. Step 2: Convert to fraction form
    72,207.40/108,311.10 = 48,587.80/x
  3. Step 3: Cross multiply
    72,207.40x = 108,311.10 × 48,587.80
  4. Step 4: Simplify right side
    72,207.40x = 5,262,598,064.58
  5. Step 5: Solve for x
    x = 5,262,598,064.58/72,207.40
  6. Step 6: Final answer
    x = 72,881.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.