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Finding the Fourth Proportional to 79,874.40, 110,177.82 and 51,184.40

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Solution

The fourth proportional to 79,874.40, 110,177.82 and 51,184.40 is: 70,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,874.40 : 110,177.82 = 51,184.40 : x
  2. Step 2: Convert to fraction form
    79,874.40/110,177.82 = 51,184.40/x
  3. Step 3: Cross multiply
    79,874.40x = 110,177.82 × 51,184.40
  4. Step 4: Simplify right side
    79,874.40x = 5,639,385,059.12
  5. Step 5: Solve for x
    x = 5,639,385,059.12/79,874.40
  6. Step 6: Final answer
    x = 70,603.16

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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.