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Finding the Fourth Proportional to 79,638.26, 109,895.13 and 47,371.10

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Solution

The fourth proportional to 79,638.26, 109,895.13 and 47,371.10 is: 65,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,638.26 : 109,895.13 = 47,371.10 : x
  2. Step 2: Convert to fraction form
    79,638.26/109,895.13 = 47,371.10/x
  3. Step 3: Cross multiply
    79,638.26x = 109,895.13 × 47,371.10
  4. Step 4: Simplify right side
    79,638.26x = 5,205,852,643.27
  5. Step 5: Solve for x
    x = 5,205,852,643.27/79,638.26
  6. Step 6: Final answer
    x = 65,368.74

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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.