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Finding the Fourth Proportional to 61,159.92, 91,749 and 21,713.74

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Solution

The fourth proportional to 61,159.92, 91,749 and 21,713.74 is: 32,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,159.92 : 91,749 = 21,713.74 : x
  2. Step 2: Convert to fraction form
    61,159.92/91,749 = 21,713.74/x
  3. Step 3: Cross multiply
    61,159.92x = 91,749 × 21,713.74
  4. Step 4: Simplify right side
    61,159.92x = 1,992,213,931.26
  5. Step 5: Solve for x
    x = 1,992,213,931.26/61,159.92
  6. Step 6: Final answer
    x = 32,573.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.