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Finding the Fourth Proportional to 79,126.65, 109,245.74 and 70,614.18

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Solution

The fourth proportional to 79,126.65, 109,245.74 and 70,614.18 is: 97,493.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,126.65 : 109,245.74 = 70,614.18 : x
  2. Step 2: Convert to fraction form
    79,126.65/109,245.74 = 70,614.18/x
  3. Step 3: Cross multiply
    79,126.65x = 109,245.74 × 70,614.18
  4. Step 4: Simplify right side
    79,126.65x = 7,714,297,995.52
  5. Step 5: Solve for x
    x = 7,714,297,995.52/79,126.65
  6. Step 6: Final answer
    x = 97,493.04

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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.