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Finding the Fourth Proportional to 79,579.40, 109,782.76 and 47,692.94

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Solution

The fourth proportional to 79,579.40, 109,782.76 and 47,692.94 is: 65,794.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,579.40 : 109,782.76 = 47,692.94 : x
  2. Step 2: Convert to fraction form
    79,579.40/109,782.76 = 47,692.94/x
  3. Step 3: Cross multiply
    79,579.40x = 109,782.76 × 47,692.94
  4. Step 4: Simplify right side
    79,579.40x = 5,235,862,347.25
  5. Step 5: Solve for x
    x = 5,235,862,347.25/79,579.40
  6. Step 6: Final answer
    x = 65,794.19

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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.