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Finding the Fourth Proportional to 70,136.39, 96,793.41 and 39,931.49

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Solution

The fourth proportional to 70,136.39, 96,793.41 and 39,931.49 is: 55,108.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,136.39 : 96,793.41 = 39,931.49 : x
  2. Step 2: Convert to fraction form
    70,136.39/96,793.41 = 39,931.49/x
  3. Step 3: Cross multiply
    70,136.39x = 96,793.41 × 39,931.49
  4. Step 4: Simplify right side
    70,136.39x = 3,865,105,083.48
  5. Step 5: Solve for x
    x = 3,865,105,083.48/70,136.39
  6. Step 6: Final answer
    x = 55,108.41

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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.