Home / 71,945.16-99,280.62-40,113.42

Finding the Fourth Proportional to 71,945.16, 99,280.62 and 40,113.42

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Solution

The fourth proportional to 71,945.16, 99,280.62 and 40,113.42 is: 55,354.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,945.16 : 99,280.62 = 40,113.42 : x
  2. Step 2: Convert to fraction form
    71,945.16/99,280.62 = 40,113.42/x
  3. Step 3: Cross multiply
    71,945.16x = 99,280.62 × 40,113.42
  4. Step 4: Simplify right side
    71,945.16x = 3,982,485,207.92
  5. Step 5: Solve for x
    x = 3,982,485,207.92/71,945.16
  6. Step 6: Final answer
    x = 55,354.46

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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.