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Finding the Fourth Proportional to 115,382, 159,227.16 and 62,390

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Solution

The fourth proportional to 115,382, 159,227.16 and 62,390 is: 86,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,382 : 159,227.16 = 62,390 : x
  2. Step 2: Convert to fraction form
    115,382/159,227.16 = 62,390/x
  3. Step 3: Cross multiply
    115,382x = 159,227.16 × 62,390
  4. Step 4: Simplify right side
    115,382x = 9,934,182,512.40
  5. Step 5: Solve for x
    x = 9,934,182,512.40/115,382
  6. Step 6: Final answer
    x = 86,098.20

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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.