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Finding the Fourth Proportional to 79,578.70, 109,813.26 and 45,587.32

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Solution

The fourth proportional to 79,578.70, 109,813.26 and 45,587.32 is: 62,907.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,578.70 : 109,813.26 = 45,587.32 : x
  2. Step 2: Convert to fraction form
    79,578.70/109,813.26 = 45,587.32/x
  3. Step 3: Cross multiply
    79,578.70x = 109,813.26 × 45,587.32
  4. Step 4: Simplify right side
    79,578.70x = 5,006,092,223.86
  5. Step 5: Solve for x
    x = 5,006,092,223.86/79,578.70
  6. Step 6: Final answer
    x = 62,907.44

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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.