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Finding the Fourth Proportional to 79,358.66, 109,514.89 and 45,367.90

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Solution

The fourth proportional to 79,358.66, 109,514.89 and 45,367.90 is: 62,607.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,358.66 : 109,514.89 = 45,367.90 : x
  2. Step 2: Convert to fraction form
    79,358.66/109,514.89 = 45,367.90/x
  3. Step 3: Cross multiply
    79,358.66x = 109,514.89 × 45,367.90
  4. Step 4: Simplify right side
    79,358.66x = 4,968,460,578.03
  5. Step 5: Solve for x
    x = 4,968,460,578.03/79,358.66
  6. Step 6: Final answer
    x = 62,607.67

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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.