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Finding the Fourth Proportional to 75,301.60, 112,875.60 and 44,120.80

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Solution

The fourth proportional to 75,301.60, 112,875.60 and 44,120.80 is: 66,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,301.60 : 112,875.60 = 44,120.80 : x
  2. Step 2: Convert to fraction form
    75,301.60/112,875.60 = 44,120.80/x
  3. Step 3: Cross multiply
    75,301.60x = 112,875.60 × 44,120.80
  4. Step 4: Simplify right side
    75,301.60x = 4,980,161,772.48
  5. Step 5: Solve for x
    x = 4,980,161,772.48/75,301.60
  6. Step 6: Final answer
    x = 66,136.20

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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.