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Finding the Fourth Proportional to 78,133.47, 117,203.44 and 22,729.47

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Solution

The fourth proportional to 78,133.47, 117,203.44 and 22,729.47 is: 34,095.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.47 : 117,203.44 = 22,729.47 : x
  2. Step 2: Convert to fraction form
    78,133.47/117,203.44 = 22,729.47/x
  3. Step 3: Cross multiply
    78,133.47x = 117,203.44 × 22,729.47
  4. Step 4: Simplify right side
    78,133.47x = 2,663,972,073.38
  5. Step 5: Solve for x
    x = 2,663,972,073.38/78,133.47
  6. Step 6: Final answer
    x = 34,095.15

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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.