Home / 61,920.78-85,464.28-40,702.02

Finding the Fourth Proportional to 61,920.78, 85,464.28 and 40,702.02

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Solution

The fourth proportional to 61,920.78, 85,464.28 and 40,702.02 is: 56,177.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,920.78 : 85,464.28 = 40,702.02 : x
  2. Step 2: Convert to fraction form
    61,920.78/85,464.28 = 40,702.02/x
  3. Step 3: Cross multiply
    61,920.78x = 85,464.28 × 40,702.02
  4. Step 4: Simplify right side
    61,920.78x = 3,478,568,833.85
  5. Step 5: Solve for x
    x = 3,478,568,833.85/61,920.78
  6. Step 6: Final answer
    x = 56,177.73

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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.