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Finding the Fourth Proportional to 79,322.40, 118,983.60 and 75,823.20

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Solution

The fourth proportional to 79,322.40, 118,983.60 and 75,823.20 is: 113,734.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,322.40 : 118,983.60 = 75,823.20 : x
  2. Step 2: Convert to fraction form
    79,322.40/118,983.60 = 75,823.20/x
  3. Step 3: Cross multiply
    79,322.40x = 118,983.60 × 75,823.20
  4. Step 4: Simplify right side
    79,322.40x = 9,021,717,299.52
  5. Step 5: Solve for x
    x = 9,021,717,299.52/79,322.40
  6. Step 6: Final answer
    x = 113,734.80

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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.