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Finding the Fourth Proportional to 79,219.62, 118,818.90 and 28,613.45

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Solution

The fourth proportional to 79,219.62, 118,818.90 and 28,613.45 is: 42,916.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,219.62 : 118,818.90 = 28,613.45 : x
  2. Step 2: Convert to fraction form
    79,219.62/118,818.90 = 28,613.45/x
  3. Step 3: Cross multiply
    79,219.62x = 118,818.90 × 28,613.45
  4. Step 4: Simplify right side
    79,219.62x = 3,399,818,951.25
  5. Step 5: Solve for x
    x = 3,399,818,951.25/79,219.62
  6. Step 6: Final answer
    x = 42,916.38

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1.5x scale

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.