Home / 84,534.47-126,801.75-68,720.66

Finding the Fourth Proportional to 84,534.47, 126,801.75 and 68,720.66

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Solution

The fourth proportional to 84,534.47, 126,801.75 and 68,720.66 is: 103,081.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,534.47 : 126,801.75 = 68,720.66 : x
  2. Step 2: Convert to fraction form
    84,534.47/126,801.75 = 68,720.66/x
  3. Step 3: Cross multiply
    84,534.47x = 126,801.75 × 68,720.66
  4. Step 4: Simplify right side
    84,534.47x = 8,713,899,949.16
  5. Step 5: Solve for x
    x = 8,713,899,949.16/84,534.47
  6. Step 6: Final answer
    x = 103,081.03

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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.