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Finding the Fourth Proportional to 73,254.60, 109,881.90 and 72,817.20

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Solution

The fourth proportional to 73,254.60, 109,881.90 and 72,817.20 is: 109,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,254.60 : 109,881.90 = 72,817.20 : x
  2. Step 2: Convert to fraction form
    73,254.60/109,881.90 = 72,817.20/x
  3. Step 3: Cross multiply
    73,254.60x = 109,881.90 × 72,817.20
  4. Step 4: Simplify right side
    73,254.60x = 8,001,292,288.68
  5. Step 5: Solve for x
    x = 8,001,292,288.68/73,254.60
  6. Step 6: Final answer
    x = 109,225.80

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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.