Home / 55,990.28-77,266.56-30,839.78

Finding the Fourth Proportional to 55,990.28, 77,266.56 and 30,839.78

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Solution

The fourth proportional to 55,990.28, 77,266.56 and 30,839.78 is: 42,558.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,990.28 : 77,266.56 = 30,839.78 : x
  2. Step 2: Convert to fraction form
    55,990.28/77,266.56 = 30,839.78/x
  3. Step 3: Cross multiply
    55,990.28x = 77,266.56 × 30,839.78
  4. Step 4: Simplify right side
    55,990.28x = 2,382,883,325.42
  5. Step 5: Solve for x
    x = 2,382,883,325.42/55,990.28
  6. Step 6: Final answer
    x = 42,558.88

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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.