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Finding the Fourth Proportional to 79,730, 119,668.81 and 40,314.79

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Solution

The fourth proportional to 79,730, 119,668.81 and 40,314.79 is: 60,509.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,730 : 119,668.81 = 40,314.79 : x
  2. Step 2: Convert to fraction form
    79,730/119,668.81 = 40,314.79/x
  3. Step 3: Cross multiply
    79,730x = 119,668.81 × 40,314.79
  4. Step 4: Simplify right side
    79,730x = 4,824,422,944.70
  5. Step 5: Solve for x
    x = 4,824,422,944.70/79,730
  6. Step 6: Final answer
    x = 60,509.51

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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.