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Finding the Fourth Proportional to 78,017.52, 117,091.92 and 73,096.77

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Solution

The fourth proportional to 78,017.52, 117,091.92 and 73,096.77 is: 109,706.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,017.52 : 117,091.92 = 73,096.77 : x
  2. Step 2: Convert to fraction form
    78,017.52/117,091.92 = 73,096.77/x
  3. Step 3: Cross multiply
    78,017.52x = 117,091.92 × 73,096.77
  4. Step 4: Simplify right side
    78,017.52x = 8,559,041,145.10
  5. Step 5: Solve for x
    x = 8,559,041,145.10/78,017.52
  6. Step 6: Final answer
    x = 109,706.65

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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.