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Finding the Fourth Proportional to 79,117.20, 118,675.80 and 48,013.20

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Solution

The fourth proportional to 79,117.20, 118,675.80 and 48,013.20 is: 72,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,117.20 : 118,675.80 = 48,013.20 : x
  2. Step 2: Convert to fraction form
    79,117.20/118,675.80 = 48,013.20/x
  3. Step 3: Cross multiply
    79,117.20x = 118,675.80 × 48,013.20
  4. Step 4: Simplify right side
    79,117.20x = 5,698,004,920.56
  5. Step 5: Solve for x
    x = 5,698,004,920.56/79,117.20
  6. Step 6: Final answer
    x = 72,019.80

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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.