Home / 71,948.88-99,292.53-40,117.78

Finding the Fourth Proportional to 71,948.88, 99,292.53 and 40,117.78

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Solution

The fourth proportional to 71,948.88, 99,292.53 and 40,117.78 is: 55,364.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,948.88 : 99,292.53 = 40,117.78 : x
  2. Step 2: Convert to fraction form
    71,948.88/99,292.53 = 40,117.78/x
  3. Step 3: Cross multiply
    71,948.88x = 99,292.53 × 40,117.78
  4. Step 4: Simplify right side
    71,948.88x = 3,983,396,148.74
  5. Step 5: Solve for x
    x = 3,983,396,148.74/71,948.88
  6. Step 6: Final answer
    x = 55,364.25

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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.