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Finding the Fourth Proportional to 78,370.62, 108,184.55 and 52,911.46

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Solution

The fourth proportional to 78,370.62, 108,184.55 and 52,911.46 is: 73,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.62 : 108,184.55 = 52,911.46 : x
  2. Step 2: Convert to fraction form
    78,370.62/108,184.55 = 52,911.46/x
  3. Step 3: Cross multiply
    78,370.62x = 108,184.55 × 52,911.46
  4. Step 4: Simplify right side
    78,370.62x = 5,724,202,489.94
  5. Step 5: Solve for x
    x = 5,724,202,489.94/78,370.62
  6. Step 6: Final answer
    x = 73,040.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.