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Finding the Fourth Proportional to 72,338.46, 99,827.28 and 40,504.92

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Solution

The fourth proportional to 72,338.46, 99,827.28 and 40,504.92 is: 55,896.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,338.46 : 99,827.28 = 40,504.92 : x
  2. Step 2: Convert to fraction form
    72,338.46/99,827.28 = 40,504.92/x
  3. Step 3: Cross multiply
    72,338.46x = 99,827.28 × 40,504.92
  4. Step 4: Simplify right side
    72,338.46x = 4,043,495,990.22
  5. Step 5: Solve for x
    x = 4,043,495,990.22/72,338.46
  6. Step 6: Final answer
    x = 55,896.90

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1.5x scale

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.