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Finding the Fourth Proportional to 79,319.66, 109,445.97 and 45,338.91

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Solution

The fourth proportional to 79,319.66, 109,445.97 and 45,338.91 is: 62,559.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.66 : 109,445.97 = 45,338.91 : x
  2. Step 2: Convert to fraction form
    79,319.66/109,445.97 = 45,338.91/x
  3. Step 3: Cross multiply
    79,319.66x = 109,445.97 × 45,338.91
  4. Step 4: Simplify right side
    79,319.66x = 4,962,160,983.69
  5. Step 5: Solve for x
    x = 4,962,160,983.69/79,319.66
  6. Step 6: Final answer
    x = 62,559.03

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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.