Home / 80,960.36-111,687.19-52,655.72

Finding the Fourth Proportional to 80,960.36, 111,687.19 and 52,655.72

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Solution

The fourth proportional to 80,960.36, 111,687.19 and 52,655.72 is: 72,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,960.36 : 111,687.19 = 52,655.72 : x
  2. Step 2: Convert to fraction form
    80,960.36/111,687.19 = 52,655.72/x
  3. Step 3: Cross multiply
    80,960.36x = 111,687.19 × 52,655.72
  4. Step 4: Simplify right side
    80,960.36x = 5,880,968,714.15
  5. Step 5: Solve for x
    x = 5,880,968,714.15/80,960.36
  6. Step 6: Final answer
    x = 72,640.11

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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.