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Finding the Fourth Proportional to 79,690.98, 109,958.52 and 49,483.65

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Solution

The fourth proportional to 79,690.98, 109,958.52 and 49,483.65 is: 68,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690.98 : 109,958.52 = 49,483.65 : x
  2. Step 2: Convert to fraction form
    79,690.98/109,958.52 = 49,483.65/x
  3. Step 3: Cross multiply
    79,690.98x = 109,958.52 × 49,483.65
  4. Step 4: Simplify right side
    79,690.98x = 5,441,148,918.20
  5. Step 5: Solve for x
    x = 5,441,148,918.20/79,690.98
  6. Step 6: Final answer
    x = 68,278.10

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1.5x scale

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.