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Finding the Fourth Proportional to 69,007.68, 95,225.36 and 38,788.20

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Solution

The fourth proportional to 69,007.68, 95,225.36 and 38,788.20 is: 53,524.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,007.68 : 95,225.36 = 38,788.20 : x
  2. Step 2: Convert to fraction form
    69,007.68/95,225.36 = 38,788.20/x
  3. Step 3: Cross multiply
    69,007.68x = 95,225.36 × 38,788.20
  4. Step 4: Simplify right side
    69,007.68x = 3,693,620,114.81
  5. Step 5: Solve for x
    x = 3,693,620,114.81/69,007.68
  6. Step 6: Final answer
    x = 53,524.77

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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.