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Finding the Fourth Proportional to 69,477.60, 95,878.68 and 39,272.70

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Solution

The fourth proportional to 69,477.60, 95,878.68 and 39,272.70 is: 54,196.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,477.60 : 95,878.68 = 39,272.70 : x
  2. Step 2: Convert to fraction form
    69,477.60/95,878.68 = 39,272.70/x
  3. Step 3: Cross multiply
    69,477.60x = 95,878.68 × 39,272.70
  4. Step 4: Simplify right side
    69,477.60x = 3,765,414,636.04
  5. Step 5: Solve for x
    x = 3,765,414,636.04/69,477.60
  6. Step 6: Final answer
    x = 54,196.10

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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.