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Finding the Fourth Proportional to 79,042.76, 118,000.69 and 76,274.18

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Solution

The fourth proportional to 79,042.76, 118,000.69 and 76,274.18 is: 113,867.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,042.76 : 118,000.69 = 76,274.18 : x
  2. Step 2: Convert to fraction form
    79,042.76/118,000.69 = 76,274.18/x
  3. Step 3: Cross multiply
    79,042.76x = 118,000.69 × 76,274.18
  4. Step 4: Simplify right side
    79,042.76x = 9,000,405,869.18
  5. Step 5: Solve for x
    x = 9,000,405,869.18/79,042.76
  6. Step 6: Final answer
    x = 113,867.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.