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Finding the Fourth Proportional to 78,785.90, 118,143.98 and 22,612.97

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Solution

The fourth proportional to 78,785.90, 118,143.98 and 22,612.97 is: 33,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,785.90 : 118,143.98 = 22,612.97 : x
  2. Step 2: Convert to fraction form
    78,785.90/118,143.98 = 22,612.97/x
  3. Step 3: Cross multiply
    78,785.90x = 118,143.98 × 22,612.97
  4. Step 4: Simplify right side
    78,785.90x = 2,671,585,571.64
  5. Step 5: Solve for x
    x = 2,671,585,571.64/78,785.90
  6. Step 6: Final answer
    x = 33,909.44

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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.