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Finding the Fourth Proportional to 78,371.42, 108,185.64 and 52,912.26

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Solution

The fourth proportional to 78,371.42, 108,185.64 and 52,912.26 is: 73,041.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.42 : 108,185.64 = 52,912.26 : x
  2. Step 2: Convert to fraction form
    78,371.42/108,185.64 = 52,912.26/x
  3. Step 3: Cross multiply
    78,371.42x = 108,185.64 × 52,912.26
  4. Step 4: Simplify right side
    78,371.42x = 5,724,346,711.95
  5. Step 5: Solve for x
    x = 5,724,346,711.95/78,371.42
  6. Step 6: Final answer
    x = 73,041.26

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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.