Home / 81,229.18-112,116.57-65,033.26

Finding the Fourth Proportional to 81,229.18, 112,116.57 and 65,033.26

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Solution

The fourth proportional to 81,229.18, 112,116.57 and 65,033.26 is: 89,762.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,229.18 : 112,116.57 = 65,033.26 : x
  2. Step 2: Convert to fraction form
    81,229.18/112,116.57 = 65,033.26/x
  3. Step 3: Cross multiply
    81,229.18x = 112,116.57 × 65,033.26
  4. Step 4: Simplify right side
    81,229.18x = 7,291,306,047.12
  5. Step 5: Solve for x
    x = 7,291,306,047.12/81,229.18
  6. Step 6: Final answer
    x = 89,762.15

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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.