Home / 85,150.13-127,748.25-31,847.52

Finding the Fourth Proportional to 85,150.13, 127,748.25 and 31,847.52

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Solution

The fourth proportional to 85,150.13, 127,748.25 and 31,847.52 is: 47,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,150.13 : 127,748.25 = 31,847.52 : x
  2. Step 2: Convert to fraction form
    85,150.13/127,748.25 = 31,847.52/x
  3. Step 3: Cross multiply
    85,150.13x = 127,748.25 × 31,847.52
  4. Step 4: Simplify right side
    85,150.13x = 4,068,464,946.84
  5. Step 5: Solve for x
    x = 4,068,464,946.84/85,150.13
  6. Step 6: Final answer
    x = 47,779.90

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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.