Home / 56,028.28-77,318.61-30,877.78

Finding the Fourth Proportional to 56,028.28, 77,318.61 and 30,877.78

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Solution

The fourth proportional to 56,028.28, 77,318.61 and 30,877.78 is: 42,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,028.28 : 77,318.61 = 30,877.78 : x
  2. Step 2: Convert to fraction form
    56,028.28/77,318.61 = 30,877.78/x
  3. Step 3: Cross multiply
    56,028.28x = 77,318.61 × 30,877.78
  4. Step 4: Simplify right side
    56,028.28x = 2,387,427,029.49
  5. Step 5: Solve for x
    x = 2,387,427,029.49/56,028.28
  6. Step 6: Final answer
    x = 42,611.11

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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.