Home / 87,501-120,757.86-49,787.40

Finding the Fourth Proportional to 87,501, 120,757.86 and 49,787.40

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Solution

The fourth proportional to 87,501, 120,757.86 and 49,787.40 is: 68,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,501 : 120,757.86 = 49,787.40 : x
  2. Step 2: Convert to fraction form
    87,501/120,757.86 = 49,787.40/x
  3. Step 3: Cross multiply
    87,501x = 120,757.86 × 49,787.40
  4. Step 4: Simplify right side
    87,501x = 6,012,219,878.96
  5. Step 5: Solve for x
    x = 6,012,219,878.96/87,501
  6. Step 6: Final answer
    x = 68,710.30

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1.5x scale

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.