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Finding the Fourth Proportional to 78,325.29, 117,487.94 and 22,921.29

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Solution

The fourth proportional to 78,325.29, 117,487.94 and 22,921.29 is: 34,381.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,325.29 : 117,487.94 = 22,921.29 : x
  2. Step 2: Convert to fraction form
    78,325.29/117,487.94 = 22,921.29/x
  3. Step 3: Cross multiply
    78,325.29x = 117,487.94 × 22,921.29
  4. Step 4: Simplify right side
    78,325.29x = 2,692,975,029.64
  5. Step 5: Solve for x
    x = 2,692,975,029.64/78,325.29
  6. Step 6: Final answer
    x = 34,381.94

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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.