Home / 82,811.20-124,216.80-59,191.60

Finding the Fourth Proportional to 82,811.20, 124,216.80 and 59,191.60

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Solution

The fourth proportional to 82,811.20, 124,216.80 and 59,191.60 is: 88,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,811.20 : 124,216.80 = 59,191.60 : x
  2. Step 2: Convert to fraction form
    82,811.20/124,216.80 = 59,191.60/x
  3. Step 3: Cross multiply
    82,811.20x = 124,216.80 × 59,191.60
  4. Step 4: Simplify right side
    82,811.20x = 7,352,591,138.88
  5. Step 5: Solve for x
    x = 7,352,591,138.88/82,811.20
  6. Step 6: Final answer
    x = 88,787.40

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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.