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Finding the Fourth Proportional to 69,547.40, 104,321.10 and 66,825.80

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Solution

The fourth proportional to 69,547.40, 104,321.10 and 66,825.80 is: 100,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,547.40 : 104,321.10 = 66,825.80 : x
  2. Step 2: Convert to fraction form
    69,547.40/104,321.10 = 66,825.80/x
  3. Step 3: Cross multiply
    69,547.40x = 104,321.10 × 66,825.80
  4. Step 4: Simplify right side
    69,547.40x = 6,971,340,964.38
  5. Step 5: Solve for x
    x = 6,971,340,964.38/69,547.40
  6. Step 6: Final answer
    x = 100,238.70

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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.