Home / 71,877.18-99,190.61-40,047.19

Finding the Fourth Proportional to 71,877.18, 99,190.61 and 40,047.19

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Solution

The fourth proportional to 71,877.18, 99,190.61 and 40,047.19 is: 55,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,877.18 : 99,190.61 = 40,047.19 : x
  2. Step 2: Convert to fraction form
    71,877.18/99,190.61 = 40,047.19/x
  3. Step 3: Cross multiply
    71,877.18x = 99,190.61 × 40,047.19
  4. Step 4: Simplify right side
    71,877.18x = 3,972,305,204.89
  5. Step 5: Solve for x
    x = 3,972,305,204.89/71,877.18
  6. Step 6: Final answer
    x = 55,265.18

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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.