Home / 81,387.40-121,983.90-41,924.20

Finding the Fourth Proportional to 81,387.40, 121,983.90 and 41,924.20

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Solution

The fourth proportional to 81,387.40, 121,983.90 and 41,924.20 is: 62,836.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387.40 : 121,983.90 = 41,924.20 : x
  2. Step 2: Convert to fraction form
    81,387.40/121,983.90 = 41,924.20/x
  3. Step 3: Cross multiply
    81,387.40x = 121,983.90 × 41,924.20
  4. Step 4: Simplify right side
    81,387.40x = 5,114,077,420.38
  5. Step 5: Solve for x
    x = 5,114,077,420.38/81,387.40
  6. Step 6: Final answer
    x = 62,836.23

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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.