Home / 88,128.74-121,616.94-47,842.43

Finding the Fourth Proportional to 88,128.74, 121,616.94 and 47,842.43

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Solution

The fourth proportional to 88,128.74, 121,616.94 and 47,842.43 is: 66,022.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128.74 : 121,616.94 = 47,842.43 : x
  2. Step 2: Convert to fraction form
    88,128.74/121,616.94 = 47,842.43/x
  3. Step 3: Cross multiply
    88,128.74x = 121,616.94 × 47,842.43
  4. Step 4: Simplify right side
    88,128.74x = 5,818,449,330.68
  5. Step 5: Solve for x
    x = 5,818,449,330.68/88,128.74
  6. Step 6: Final answer
    x = 66,022.16

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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.