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Finding the Fourth Proportional to 72,748.64, 108,963.04 and 60,125.60

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Solution

The fourth proportional to 72,748.64, 108,963.04 and 60,125.60 is: 90,056.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,748.64 : 108,963.04 = 60,125.60 : x
  2. Step 2: Convert to fraction form
    72,748.64/108,963.04 = 60,125.60/x
  3. Step 3: Cross multiply
    72,748.64x = 108,963.04 × 60,125.60
  4. Step 4: Simplify right side
    72,748.64x = 6,551,468,157.82
  5. Step 5: Solve for x
    x = 6,551,468,157.82/72,748.64
  6. Step 6: Final answer
    x = 90,056.23

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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.