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Finding the Fourth Proportional to 78,761.44, 108,717.12 and 46,940.32

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Solution

The fourth proportional to 78,761.44, 108,717.12 and 46,940.32 is: 64,793.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.44 : 108,717.12 = 46,940.32 : x
  2. Step 2: Convert to fraction form
    78,761.44/108,717.12 = 46,940.32/x
  3. Step 3: Cross multiply
    78,761.44x = 108,717.12 × 46,940.32
  4. Step 4: Simplify right side
    78,761.44x = 5,103,216,402.28
  5. Step 5: Solve for x
    x = 5,103,216,402.28/78,761.44
  6. Step 6: Final answer
    x = 64,793.34

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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.