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Finding the Fourth Proportional to 79,248, 118,834.36 and 45,978.26

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Solution

The fourth proportional to 79,248, 118,834.36 and 45,978.26 is: 68,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,248 : 118,834.36 = 45,978.26 : x
  2. Step 2: Convert to fraction form
    79,248/118,834.36 = 45,978.26/x
  3. Step 3: Cross multiply
    79,248x = 118,834.36 × 45,978.26
  4. Step 4: Simplify right side
    79,248x = 5,463,797,101.01
  5. Step 5: Solve for x
    x = 5,463,797,101.01/79,248
  6. Step 6: Final answer
    x = 68,945.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.