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Finding the Fourth Proportional to 79,509.26, 109,718.12 and 43,699.30

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Solution

The fourth proportional to 79,509.26, 109,718.12 and 43,699.30 is: 60,302.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,509.26 : 109,718.12 = 43,699.30 : x
  2. Step 2: Convert to fraction form
    79,509.26/109,718.12 = 43,699.30/x
  3. Step 3: Cross multiply
    79,509.26x = 109,718.12 × 43,699.30
  4. Step 4: Simplify right side
    79,509.26x = 4,794,604,492.73
  5. Step 5: Solve for x
    x = 4,794,604,492.73/79,509.26
  6. Step 6: Final answer
    x = 60,302.47

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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.