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Finding the Fourth Proportional to 69,575.40, 104,363.10 and 66,853.80

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Solution

The fourth proportional to 69,575.40, 104,363.10 and 66,853.80 is: 100,280.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,575.40 : 104,363.10 = 66,853.80 : x
  2. Step 2: Convert to fraction form
    69,575.40/104,363.10 = 66,853.80/x
  3. Step 3: Cross multiply
    69,575.40x = 104,363.10 × 66,853.80
  4. Step 4: Simplify right side
    69,575.40x = 6,977,069,814.78
  5. Step 5: Solve for x
    x = 6,977,069,814.78/69,575.40
  6. Step 6: Final answer
    x = 100,280.70

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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.