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Finding the Fourth Proportional to 55,168.92, 76,132.90 and 31,300.20

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Solution

The fourth proportional to 55,168.92, 76,132.90 and 31,300.20 is: 43,194.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,168.92 : 76,132.90 = 31,300.20 : x
  2. Step 2: Convert to fraction form
    55,168.92/76,132.90 = 31,300.20/x
  3. Step 3: Cross multiply
    55,168.92x = 76,132.90 × 31,300.20
  4. Step 4: Simplify right side
    55,168.92x = 2,382,974,996.58
  5. Step 5: Solve for x
    x = 2,382,974,996.58/55,168.92
  6. Step 6: Final answer
    x = 43,194.16

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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.