Home / 85,278.75-127,947.62-29,158.36

Finding the Fourth Proportional to 85,278.75, 127,947.62 and 29,158.36

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Solution

The fourth proportional to 85,278.75, 127,947.62 and 29,158.36 is: 43,747.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,278.75 : 127,947.62 = 29,158.36 : x
  2. Step 2: Convert to fraction form
    85,278.75/127,947.62 = 29,158.36/x
  3. Step 3: Cross multiply
    85,278.75x = 127,947.62 × 29,158.36
  4. Step 4: Simplify right side
    85,278.75x = 3,730,742,518.13
  5. Step 5: Solve for x
    x = 3,730,742,518.13/85,278.75
  6. Step 6: Final answer
    x = 43,747.62

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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.