Home / 87,812.40-131,567.40-40,969.20

Finding the Fourth Proportional to 87,812.40, 131,567.40 and 40,969.20

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Solution

The fourth proportional to 87,812.40, 131,567.40 and 40,969.20 is: 61,383.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.40 : 131,567.40 = 40,969.20 : x
  2. Step 2: Convert to fraction form
    87,812.40/131,567.40 = 40,969.20/x
  3. Step 3: Cross multiply
    87,812.40x = 131,567.40 × 40,969.20
  4. Step 4: Simplify right side
    87,812.40x = 5,390,211,124.08
  5. Step 5: Solve for x
    x = 5,390,211,124.08/87,812.40
  6. Step 6: Final answer
    x = 61,383.26

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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.