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Finding the Fourth Proportional to 70,225.89, 96,911.74 and 38,394.80

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Solution

The fourth proportional to 70,225.89, 96,911.74 and 38,394.80 is: 52,984.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,225.89 : 96,911.74 = 38,394.80 : x
  2. Step 2: Convert to fraction form
    70,225.89/96,911.74 = 38,394.80/x
  3. Step 3: Cross multiply
    70,225.89x = 96,911.74 × 38,394.80
  4. Step 4: Simplify right side
    70,225.89x = 3,720,906,874.95
  5. Step 5: Solve for x
    x = 3,720,906,874.95/70,225.89
  6. Step 6: Final answer
    x = 52,984.83

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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.