Home / 71,940.68-99,278.28-40,111.62

Finding the Fourth Proportional to 71,940.68, 99,278.28 and 40,111.62

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Solution

The fourth proportional to 71,940.68, 99,278.28 and 40,111.62 is: 55,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,940.68 : 99,278.28 = 40,111.62 : x
  2. Step 2: Convert to fraction form
    71,940.68/99,278.28 = 40,111.62/x
  3. Step 3: Cross multiply
    71,940.68x = 99,278.28 × 40,111.62
  4. Step 4: Simplify right side
    71,940.68x = 3,982,212,641.61
  5. Step 5: Solve for x
    x = 3,982,212,641.61/71,940.68
  6. Step 6: Final answer
    x = 55,354.11

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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.