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Finding the Fourth Proportional to 55,995.56, 84,001.25 and 20,931.88

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Solution

The fourth proportional to 55,995.56, 84,001.25 and 20,931.88 is: 31,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,995.56 : 84,001.25 = 20,931.88 : x
  2. Step 2: Convert to fraction form
    55,995.56/84,001.25 = 20,931.88/x
  3. Step 3: Cross multiply
    55,995.56x = 84,001.25 × 20,931.88
  4. Step 4: Simplify right side
    55,995.56x = 1,758,304,084.85
  5. Step 5: Solve for x
    x = 1,758,304,084.85/55,995.56
  6. Step 6: Final answer
    x = 31,400.78

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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.