Home / 70,207.20-96,872.50-39,991.86

Finding the Fourth Proportional to 70,207.20, 96,872.50 and 39,991.86

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Solution

The fourth proportional to 70,207.20, 96,872.50 and 39,991.86 is: 55,181.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,207.20 : 96,872.50 = 39,991.86 : x
  2. Step 2: Convert to fraction form
    70,207.20/96,872.50 = 39,991.86/x
  3. Step 3: Cross multiply
    70,207.20x = 96,872.50 × 39,991.86
  4. Step 4: Simplify right side
    70,207.20x = 3,874,111,457.85
  5. Step 5: Solve for x
    x = 3,874,111,457.85/70,207.20
  6. Step 6: Final answer
    x = 55,181.11

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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.