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Finding the Fourth Proportional to 79,351.34, 109,368.47 and 75,614.30

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Solution

The fourth proportional to 79,351.34, 109,368.47 and 75,614.30 is: 104,217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,351.34 : 109,368.47 = 75,614.30 : x
  2. Step 2: Convert to fraction form
    79,351.34/109,368.47 = 75,614.30/x
  3. Step 3: Cross multiply
    79,351.34x = 109,368.47 × 75,614.30
  4. Step 4: Simplify right side
    79,351.34x = 8,269,819,376.21
  5. Step 5: Solve for x
    x = 8,269,819,376.21/79,351.34
  6. Step 6: Final answer
    x = 104,217.77

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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.