Home / 54,977.62-75,862.70-30,779.90

Finding the Fourth Proportional to 54,977.62, 75,862.70 and 30,779.90

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Solution

The fourth proportional to 54,977.62, 75,862.70 and 30,779.90 is: 42,472.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,977.62 : 75,862.70 = 30,779.90 : x
  2. Step 2: Convert to fraction form
    54,977.62/75,862.70 = 30,779.90/x
  3. Step 3: Cross multiply
    54,977.62x = 75,862.70 × 30,779.90
  4. Step 4: Simplify right side
    54,977.62x = 2,335,046,319.73
  5. Step 5: Solve for x
    x = 2,335,046,319.73/54,977.62
  6. Step 6: Final answer
    x = 42,472.67

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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.