Home / 78,724.80-118,087.20-32,011.20

Finding the Fourth Proportional to 78,724.80, 118,087.20 and 32,011.20

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Solution

The fourth proportional to 78,724.80, 118,087.20 and 32,011.20 is: 48,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.80 : 118,087.20 = 32,011.20 : x
  2. Step 2: Convert to fraction form
    78,724.80/118,087.20 = 32,011.20/x
  3. Step 3: Cross multiply
    78,724.80x = 118,087.20 × 32,011.20
  4. Step 4: Simplify right side
    78,724.80x = 3,780,112,976.64
  5. Step 5: Solve for x
    x = 3,780,112,976.64/78,724.80
  6. Step 6: Final answer
    x = 48,016.80

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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.