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Finding the Fourth Proportional to 78,808.44, 108,732.02 and 51,941.32

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Solution

The fourth proportional to 78,808.44, 108,732.02 and 51,941.32 is: 71,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808.44 : 108,732.02 = 51,941.32 : x
  2. Step 2: Convert to fraction form
    78,808.44/108,732.02 = 51,941.32/x
  3. Step 3: Cross multiply
    78,808.44x = 108,732.02 × 51,941.32
  4. Step 4: Simplify right side
    78,808.44x = 5,647,684,645.07
  5. Step 5: Solve for x
    x = 5,647,684,645.07/78,808.44
  6. Step 6: Final answer
    x = 71,663.45

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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.