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Finding the Fourth Proportional to 78,372.50, 108,187.14 and 52,913.34

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Solution

The fourth proportional to 78,372.50, 108,187.14 and 52,913.34 is: 73,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372.50 : 108,187.14 = 52,913.34 : x
  2. Step 2: Convert to fraction form
    78,372.50/108,187.14 = 52,913.34/x
  3. Step 3: Cross multiply
    78,372.50x = 108,187.14 × 52,913.34
  4. Step 4: Simplify right side
    78,372.50x = 5,724,542,922.45
  5. Step 5: Solve for x
    x = 5,724,542,922.45/78,372.50
  6. Step 6: Final answer
    x = 73,042.75

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1.5x scale

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.