Home / 87,421.68-120,641.74-49,181.26

Finding the Fourth Proportional to 87,421.68, 120,641.74 and 49,181.26

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Solution

The fourth proportional to 87,421.68, 120,641.74 and 49,181.26 is: 67,870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421.68 : 120,641.74 = 49,181.26 : x
  2. Step 2: Convert to fraction form
    87,421.68/120,641.74 = 49,181.26/x
  3. Step 3: Cross multiply
    87,421.68x = 120,641.74 × 49,181.26
  4. Step 4: Simplify right side
    87,421.68x = 5,933,312,781.79
  5. Step 5: Solve for x
    x = 5,933,312,781.79/87,421.68
  6. Step 6: Final answer
    x = 67,870.04

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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.