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Finding the Fourth Proportional to 78,380.84, 108,091.87 and 60,447.44

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Solution

The fourth proportional to 78,380.84, 108,091.87 and 60,447.44 is: 83,360.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,380.84 : 108,091.87 = 60,447.44 : x
  2. Step 2: Convert to fraction form
    78,380.84/108,091.87 = 60,447.44/x
  3. Step 3: Cross multiply
    78,380.84x = 108,091.87 × 60,447.44
  4. Step 4: Simplify right side
    78,380.84x = 6,533,875,983.62
  5. Step 5: Solve for x
    x = 6,533,875,983.62/78,380.84
  6. Step 6: Final answer
    x = 83,360.63

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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.