Home / 87,881.23-121,278.31-53,908.45

Finding the Fourth Proportional to 87,881.23, 121,278.31 and 53,908.45

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Solution

The fourth proportional to 87,881.23, 121,278.31 and 53,908.45 is: 74,395.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,881.23 : 121,278.31 = 53,908.45 : x
  2. Step 2: Convert to fraction form
    87,881.23/121,278.31 = 53,908.45/x
  3. Step 3: Cross multiply
    87,881.23x = 121,278.31 × 53,908.45
  4. Step 4: Simplify right side
    87,881.23x = 6,537,925,104.33
  5. Step 5: Solve for x
    x = 6,537,925,104.33/87,881.23
  6. Step 6: Final answer
    x = 74,395.02

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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.