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Finding the Fourth Proportional to 90,603.59, 125,032.47 and 49,768.52

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Solution

The fourth proportional to 90,603.59, 125,032.47 and 49,768.52 is: 68,680.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,603.59 : 125,032.47 = 49,768.52 : x
  2. Step 2: Convert to fraction form
    90,603.59/125,032.47 = 49,768.52/x
  3. Step 3: Cross multiply
    90,603.59x = 125,032.47 × 49,768.52
  4. Step 4: Simplify right side
    90,603.59x = 6,222,680,983.84
  5. Step 5: Solve for x
    x = 6,222,680,983.84/90,603.59
  6. Step 6: Final answer
    x = 68,680.29

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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.