Home / 84,731.11-126,941.75-39,669.80

Finding the Fourth Proportional to 84,731.11, 126,941.75 and 39,669.80

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Solution

The fourth proportional to 84,731.11, 126,941.75 and 39,669.80 is: 59,432.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,731.11 : 126,941.75 = 39,669.80 : x
  2. Step 2: Convert to fraction form
    84,731.11/126,941.75 = 39,669.80/x
  3. Step 3: Cross multiply
    84,731.11x = 126,941.75 × 39,669.80
  4. Step 4: Simplify right side
    84,731.11x = 5,035,753,615.97
  5. Step 5: Solve for x
    x = 5,035,753,615.97/84,731.11
  6. Step 6: Final answer
    x = 59,432.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.