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Finding the Fourth Proportional to 55,767.88, 83,630 and 20,220.76

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Solution

The fourth proportional to 55,767.88, 83,630 and 20,220.76 is: 30,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,767.88 : 83,630 = 20,220.76 : x
  2. Step 2: Convert to fraction form
    55,767.88/83,630 = 20,220.76/x
  3. Step 3: Cross multiply
    55,767.88x = 83,630 × 20,220.76
  4. Step 4: Simplify right side
    55,767.88x = 1,691,062,158.80
  5. Step 5: Solve for x
    x = 1,691,062,158.80/55,767.88
  6. Step 6: Final answer
    x = 30,323.23

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1.5x scale

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.