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Finding the Fourth Proportional to 67,821.62, 93,575.04 and 39,139.27

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Solution

The fourth proportional to 67,821.62, 93,575.04 and 39,139.27 is: 54,001.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,821.62 : 93,575.04 = 39,139.27 : x
  2. Step 2: Convert to fraction form
    67,821.62/93,575.04 = 39,139.27/x
  3. Step 3: Cross multiply
    67,821.62x = 93,575.04 × 39,139.27
  4. Step 4: Simplify right side
    67,821.62x = 3,662,458,521.88
  5. Step 5: Solve for x
    x = 3,662,458,521.88/67,821.62
  6. Step 6: Final answer
    x = 54,001.34

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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.