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Finding the Fourth Proportional to 79,341.39, 109,488.11 and 45,348.12

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Solution

The fourth proportional to 79,341.39, 109,488.11 and 45,348.12 is: 62,578.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,341.39 : 109,488.11 = 45,348.12 : x
  2. Step 2: Convert to fraction form
    79,341.39/109,488.11 = 45,348.12/x
  3. Step 3: Cross multiply
    79,341.39x = 109,488.11 × 45,348.12
  4. Step 4: Simplify right side
    79,341.39x = 4,965,079,724.11
  5. Step 5: Solve for x
    x = 4,965,079,724.11/79,341.39
  6. Step 6: Final answer
    x = 62,578.68

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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.