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Finding the Fourth Proportional to 74,017.20, 111,025.80 and 69,934.80

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Solution

The fourth proportional to 74,017.20, 111,025.80 and 69,934.80 is: 104,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,017.20 : 111,025.80 = 69,934.80 : x
  2. Step 2: Convert to fraction form
    74,017.20/111,025.80 = 69,934.80/x
  3. Step 3: Cross multiply
    74,017.20x = 111,025.80 × 69,934.80
  4. Step 4: Simplify right side
    74,017.20x = 7,764,567,117.84
  5. Step 5: Solve for x
    x = 7,764,567,117.84/74,017.20
  6. Step 6: Final answer
    x = 104,902.20

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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.