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Finding the Fourth Proportional to 69,512.60, 104,268.90 and 47,205.20

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Solution

The fourth proportional to 69,512.60, 104,268.90 and 47,205.20 is: 70,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,512.60 : 104,268.90 = 47,205.20 : x
  2. Step 2: Convert to fraction form
    69,512.60/104,268.90 = 47,205.20/x
  3. Step 3: Cross multiply
    69,512.60x = 104,268.90 × 47,205.20
  4. Step 4: Simplify right side
    69,512.60x = 4,922,034,278.28
  5. Step 5: Solve for x
    x = 4,922,034,278.28/69,512.60
  6. Step 6: Final answer
    x = 70,807.80

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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.