Home / 54,774.11-75,588.05-30,900.78

Finding the Fourth Proportional to 54,774.11, 75,588.05 and 30,900.78

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Solution

The fourth proportional to 54,774.11, 75,588.05 and 30,900.78 is: 42,642.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,774.11 : 75,588.05 = 30,900.78 : x
  2. Step 2: Convert to fraction form
    54,774.11/75,588.05 = 30,900.78/x
  3. Step 3: Cross multiply
    54,774.11x = 75,588.05 × 30,900.78
  4. Step 4: Simplify right side
    54,774.11x = 2,335,729,549.18
  5. Step 5: Solve for x
    x = 2,335,729,549.18/54,774.11
  6. Step 6: Final answer
    x = 42,642.95

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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.