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Finding the Fourth Proportional to 72,248.88, 108,373.32 and 47,445.60

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Solution

The fourth proportional to 72,248.88, 108,373.32 and 47,445.60 is: 71,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.88 : 108,373.32 = 47,445.60 : x
  2. Step 2: Convert to fraction form
    72,248.88/108,373.32 = 47,445.60/x
  3. Step 3: Cross multiply
    72,248.88x = 108,373.32 × 47,445.60
  4. Step 4: Simplify right side
    72,248.88x = 5,141,837,191.39
  5. Step 5: Solve for x
    x = 5,141,837,191.39/72,248.88
  6. Step 6: Final answer
    x = 71,168.40

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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.