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Finding the Fourth Proportional to 95,574, 131,729.55 and 65,306.79

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Solution

The fourth proportional to 95,574, 131,729.55 and 65,306.79 is: 90,012.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,574 : 131,729.55 = 65,306.79 : x
  2. Step 2: Convert to fraction form
    95,574/131,729.55 = 65,306.79/x
  3. Step 3: Cross multiply
    95,574x = 131,729.55 × 65,306.79
  4. Step 4: Simplify right side
    95,574x = 8,602,834,058.64
  5. Step 5: Solve for x
    x = 8,602,834,058.64/95,574
  6. Step 6: Final answer
    x = 90,012.28

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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.