Home / 81,135.74-111,956.65-45,319.97

Finding the Fourth Proportional to 81,135.74, 111,956.65 and 45,319.97

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Solution

The fourth proportional to 81,135.74, 111,956.65 and 45,319.97 is: 62,535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,135.74 : 111,956.65 = 45,319.97 : x
  2. Step 2: Convert to fraction form
    81,135.74/111,956.65 = 45,319.97/x
  3. Step 3: Cross multiply
    81,135.74x = 111,956.65 × 45,319.97
  4. Step 4: Simplify right side
    81,135.74x = 5,073,872,185.89
  5. Step 5: Solve for x
    x = 5,073,872,185.89/81,135.74
  6. Step 6: Final answer
    x = 62,535.60

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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.