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Finding the Fourth Proportional to 103,876.18, 155,760.90 and 47,667.90

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Solution

The fourth proportional to 103,876.18, 155,760.90 and 47,667.90 is: 71,477.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,876.18 : 155,760.90 = 47,667.90 : x
  2. Step 2: Convert to fraction form
    103,876.18/155,760.90 = 47,667.90/x
  3. Step 3: Cross multiply
    103,876.18x = 155,760.90 × 47,667.90
  4. Step 4: Simplify right side
    103,876.18x = 7,424,795,005.11
  5. Step 5: Solve for x
    x = 7,424,795,005.11/103,876.18
  6. Step 6: Final answer
    x = 71,477.36

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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.