Home / 77,061.12-115,657.56-54,928.68

Finding the Fourth Proportional to 77,061.12, 115,657.56 and 54,928.68

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Solution

The fourth proportional to 77,061.12, 115,657.56 and 54,928.68 is: 82,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,061.12 : 115,657.56 = 54,928.68 : x
  2. Step 2: Convert to fraction form
    77,061.12/115,657.56 = 54,928.68/x
  3. Step 3: Cross multiply
    77,061.12x = 115,657.56 × 54,928.68
  4. Step 4: Simplify right side
    77,061.12x = 6,352,917,102.82
  5. Step 5: Solve for x
    x = 6,352,917,102.82/77,061.12
  6. Step 6: Final answer
    x = 82,439.98

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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.