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Finding the Fourth Proportional to 78,840.84, 118,278.12 and 22,680.42

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Solution

The fourth proportional to 78,840.84, 118,278.12 and 22,680.42 is: 34,025.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840.84 : 118,278.12 = 22,680.42 : x
  2. Step 2: Convert to fraction form
    78,840.84/118,278.12 = 22,680.42/x
  3. Step 3: Cross multiply
    78,840.84x = 118,278.12 × 22,680.42
  4. Step 4: Simplify right side
    78,840.84x = 2,682,597,438.41
  5. Step 5: Solve for x
    x = 2,682,597,438.41/78,840.84
  6. Step 6: Final answer
    x = 34,025.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.