Home / 71,943.28-99,281.73-40,112.18

Finding the Fourth Proportional to 71,943.28, 99,281.73 and 40,112.18

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Solution

The fourth proportional to 71,943.28, 99,281.73 and 40,112.18 is: 55,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,943.28 : 99,281.73 = 40,112.18 : x
  2. Step 2: Convert to fraction form
    71,943.28/99,281.73 = 40,112.18/x
  3. Step 3: Cross multiply
    71,943.28x = 99,281.73 × 40,112.18
  4. Step 4: Simplify right side
    71,943.28x = 3,982,406,423.91
  5. Step 5: Solve for x
    x = 3,982,406,423.91/71,943.28
  6. Step 6: Final answer
    x = 55,354.81

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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.