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Finding the Fourth Proportional to 79,394.69, 109,560.62 and 47,130.69

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Solution

The fourth proportional to 79,394.69, 109,560.62 and 47,130.69 is: 65,037.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,394.69 : 109,560.62 = 47,130.69 : x
  2. Step 2: Convert to fraction form
    79,394.69/109,560.62 = 47,130.69/x
  3. Step 3: Cross multiply
    79,394.69x = 109,560.62 × 47,130.69
  4. Step 4: Simplify right side
    79,394.69x = 5,163,667,381.77
  5. Step 5: Solve for x
    x = 5,163,667,381.77/79,394.69
  6. Step 6: Final answer
    x = 65,037.95

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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.