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Finding the Fourth Proportional to 67,489.38, 93,148.38 and 38,828.34

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Solution

The fourth proportional to 67,489.38, 93,148.38 and 38,828.34 is: 53,590.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,489.38 : 93,148.38 = 38,828.34 : x
  2. Step 2: Convert to fraction form
    67,489.38/93,148.38 = 38,828.34/x
  3. Step 3: Cross multiply
    67,489.38x = 93,148.38 × 38,828.34
  4. Step 4: Simplify right side
    67,489.38x = 3,616,796,969.09
  5. Step 5: Solve for x
    x = 3,616,796,969.09/67,489.38
  6. Step 6: Final answer
    x = 53,590.61

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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.