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Finding the Fourth Proportional to 88,107.30, 121,584.82 and 47,820.20

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Solution

The fourth proportional to 88,107.30, 121,584.82 and 47,820.20 is: 65,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,107.30 : 121,584.82 = 47,820.20 : x
  2. Step 2: Convert to fraction form
    88,107.30/121,584.82 = 47,820.20/x
  3. Step 3: Cross multiply
    88,107.30x = 121,584.82 × 47,820.20
  4. Step 4: Simplify right side
    88,107.30x = 5,814,209,801.44
  5. Step 5: Solve for x
    x = 5,814,209,801.44/88,107.30
  6. Step 6: Final answer
    x = 65,990.11

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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.