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Finding the Fourth Proportional to 72,118.92, 99,517.40 and 41,903.92

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Solution

The fourth proportional to 72,118.92, 99,517.40 and 41,903.92 is: 57,823.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,118.92 : 99,517.40 = 41,903.92 : x
  2. Step 2: Convert to fraction form
    72,118.92/99,517.40 = 41,903.92/x
  3. Step 3: Cross multiply
    72,118.92x = 99,517.40 × 41,903.92
  4. Step 4: Simplify right side
    72,118.92x = 4,170,169,168.21
  5. Step 5: Solve for x
    x = 4,170,169,168.21/72,118.92
  6. Step 6: Final answer
    x = 57,823.51

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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.