Home / 85,148.13-127,745.25-31,845.52

Finding the Fourth Proportional to 85,148.13, 127,745.25 and 31,845.52

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Solution

The fourth proportional to 85,148.13, 127,745.25 and 31,845.52 is: 47,776.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,148.13 : 127,745.25 = 31,845.52 : x
  2. Step 2: Convert to fraction form
    85,148.13/127,745.25 = 31,845.52/x
  3. Step 3: Cross multiply
    85,148.13x = 127,745.25 × 31,845.52
  4. Step 4: Simplify right side
    85,148.13x = 4,068,113,913.78
  5. Step 5: Solve for x
    x = 4,068,113,913.78/85,148.13
  6. Step 6: Final answer
    x = 47,776.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.