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Finding the Fourth Proportional to 72,512.55, 108,663.71 and 51,493.77

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Solution

The fourth proportional to 72,512.55, 108,663.71 and 51,493.77 is: 77,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,512.55 : 108,663.71 = 51,493.77 : x
  2. Step 2: Convert to fraction form
    72,512.55/108,663.71 = 51,493.77/x
  3. Step 3: Cross multiply
    72,512.55x = 108,663.71 × 51,493.77
  4. Step 4: Simplify right side
    72,512.55x = 5,595,503,832.62
  5. Step 5: Solve for x
    x = 5,595,503,832.62/72,512.55
  6. Step 6: Final answer
    x = 77,166.01

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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.