Home / 81,233.16-121,810.99-47,508.68

Finding the Fourth Proportional to 81,233.16, 121,810.99 and 47,508.68

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Solution

The fourth proportional to 81,233.16, 121,810.99 and 47,508.68 is: 71,240.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,233.16 : 121,810.99 = 47,508.68 : x
  2. Step 2: Convert to fraction form
    81,233.16/121,810.99 = 47,508.68/x
  3. Step 3: Cross multiply
    81,233.16x = 121,810.99 × 47,508.68
  4. Step 4: Simplify right side
    81,233.16x = 5,787,079,344.39
  5. Step 5: Solve for x
    x = 5,787,079,344.39/81,233.16
  6. Step 6: Final answer
    x = 71,240.36

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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.