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Finding the Fourth Proportional to 70,136.48, 96,787.84 and 38,305.28

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Solution

The fourth proportional to 70,136.48, 96,787.84 and 38,305.28 is: 52,861.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,136.48 : 96,787.84 = 38,305.28 : x
  2. Step 2: Convert to fraction form
    70,136.48/96,787.84 = 38,305.28/x
  3. Step 3: Cross multiply
    70,136.48x = 96,787.84 × 38,305.28
  4. Step 4: Simplify right side
    70,136.48x = 3,707,485,311.80
  5. Step 5: Solve for x
    x = 3,707,485,311.80/70,136.48
  6. Step 6: Final answer
    x = 52,861.01

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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.