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Finding the Fourth Proportional to 79,509.50, 109,718.47 and 43,699.55

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Solution

The fourth proportional to 79,509.50, 109,718.47 and 43,699.55 is: 60,302.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,509.50 : 109,718.47 = 43,699.55 : x
  2. Step 2: Convert to fraction form
    79,509.50/109,718.47 = 43,699.55/x
  3. Step 3: Cross multiply
    79,509.50x = 109,718.47 × 43,699.55
  4. Step 4: Simplify right side
    79,509.50x = 4,794,647,107.85
  5. Step 5: Solve for x
    x = 4,794,647,107.85/79,509.50
  6. Step 6: Final answer
    x = 60,302.82

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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.