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Finding the Fourth Proportional to 72,650.36, 100,253.76 and 48,773.72

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Solution

The fourth proportional to 72,650.36, 100,253.76 and 48,773.72 is: 67,305.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,650.36 : 100,253.76 = 48,773.72 : x
  2. Step 2: Convert to fraction form
    72,650.36/100,253.76 = 48,773.72/x
  3. Step 3: Cross multiply
    72,650.36x = 100,253.76 × 48,773.72
  4. Step 4: Simplify right side
    72,650.36x = 4,889,748,819.19
  5. Step 5: Solve for x
    x = 4,889,748,819.19/72,650.36
  6. Step 6: Final answer
    x = 67,305.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.