Home / 85,237.78-127,767.96-47,742.88

Finding the Fourth Proportional to 85,237.78, 127,767.96 and 47,742.88

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Solution

The fourth proportional to 85,237.78, 127,767.96 and 47,742.88 is: 71,564.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,237.78 : 127,767.96 = 47,742.88 : x
  2. Step 2: Convert to fraction form
    85,237.78/127,767.96 = 47,742.88/x
  3. Step 3: Cross multiply
    85,237.78x = 127,767.96 × 47,742.88
  4. Step 4: Simplify right side
    85,237.78x = 6,100,010,382.12
  5. Step 5: Solve for x
    x = 6,100,010,382.12/85,237.78
  6. Step 6: Final answer
    x = 71,564.63

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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.