Home / 71,943.64-99,282.28-40,111.90

Finding the Fourth Proportional to 71,943.64, 99,282.28 and 40,111.90

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Solution

The fourth proportional to 71,943.64, 99,282.28 and 40,111.90 is: 55,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,943.64 : 99,282.28 = 40,111.90 : x
  2. Step 2: Convert to fraction form
    71,943.64/99,282.28 = 40,111.90/x
  3. Step 3: Cross multiply
    71,943.64x = 99,282.28 × 40,111.90
  4. Step 4: Simplify right side
    71,943.64x = 3,982,400,390.72
  5. Step 5: Solve for x
    x = 3,982,400,390.72/71,943.64
  6. Step 6: Final answer
    x = 55,354.45

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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.