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Finding the Fourth Proportional to 79,493.40, 109,711.26 and 51,281.10

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Solution

The fourth proportional to 79,493.40, 109,711.26 and 51,281.10 is: 70,774.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,493.40 : 109,711.26 = 51,281.10 : x
  2. Step 2: Convert to fraction form
    79,493.40/109,711.26 = 51,281.10/x
  3. Step 3: Cross multiply
    79,493.40x = 109,711.26 × 51,281.10
  4. Step 4: Simplify right side
    79,493.40x = 5,626,114,095.19
  5. Step 5: Solve for x
    x = 5,626,114,095.19/79,493.40
  6. Step 6: Final answer
    x = 70,774.61

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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.