Home / 87,779.41-131,667.72-21,219.04

Finding the Fourth Proportional to 87,779.41, 131,667.72 and 21,219.04

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Solution

The fourth proportional to 87,779.41, 131,667.72 and 21,219.04 is: 31,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.41 : 131,667.72 = 21,219.04 : x
  2. Step 2: Convert to fraction form
    87,779.41/131,667.72 = 21,219.04/x
  3. Step 3: Cross multiply
    87,779.41x = 131,667.72 × 21,219.04
  4. Step 4: Simplify right side
    87,779.41x = 2,793,862,617.39
  5. Step 5: Solve for x
    x = 2,793,862,617.39/87,779.41
  6. Step 6: Final answer
    x = 31,828.22

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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.