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Finding the Fourth Proportional to 127,806.72, 191,710.08 and 39,060.48

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Solution

The fourth proportional to 127,806.72, 191,710.08 and 39,060.48 is: 58,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,806.72 : 191,710.08 = 39,060.48 : x
  2. Step 2: Convert to fraction form
    127,806.72/191,710.08 = 39,060.48/x
  3. Step 3: Cross multiply
    127,806.72x = 191,710.08 × 39,060.48
  4. Step 4: Simplify right side
    127,806.72x = 7,488,287,745.64
  5. Step 5: Solve for x
    x = 7,488,287,745.64/127,806.72
  6. Step 6: Final answer
    x = 58,590.72

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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.