Home / 87,351.20-131,026.80-55,858.40

Finding the Fourth Proportional to 87,351.20, 131,026.80 and 55,858.40

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Solution

The fourth proportional to 87,351.20, 131,026.80 and 55,858.40 is: 83,787.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,351.20 : 131,026.80 = 55,858.40 : x
  2. Step 2: Convert to fraction form
    87,351.20/131,026.80 = 55,858.40/x
  3. Step 3: Cross multiply
    87,351.20x = 131,026.80 × 55,858.40
  4. Step 4: Simplify right side
    87,351.20x = 7,318,947,405.12
  5. Step 5: Solve for x
    x = 7,318,947,405.12/87,351.20
  6. Step 6: Final answer
    x = 83,787.60

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1.5x scale

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.