Home / 54,972.61-75,855.80-30,774.90

Finding the Fourth Proportional to 54,972.61, 75,855.80 and 30,774.90

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Solution

The fourth proportional to 54,972.61, 75,855.80 and 30,774.90 is: 42,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,972.61 : 75,855.80 = 30,774.90 : x
  2. Step 2: Convert to fraction form
    54,972.61/75,855.80 = 30,774.90/x
  3. Step 3: Cross multiply
    54,972.61x = 75,855.80 × 30,774.90
  4. Step 4: Simplify right side
    54,972.61x = 2,334,454,659.42
  5. Step 5: Solve for x
    x = 2,334,454,659.42/54,972.61
  6. Step 6: Final answer
    x = 42,465.78

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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.