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Finding the Fourth Proportional to 79,745.65, 110,029.12 and 51,417.25

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Solution

The fourth proportional to 79,745.65, 110,029.12 and 51,417.25 is: 70,942.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,745.65 : 110,029.12 = 51,417.25 : x
  2. Step 2: Convert to fraction form
    79,745.65/110,029.12 = 51,417.25/x
  3. Step 3: Cross multiply
    79,745.65x = 110,029.12 × 51,417.25
  4. Step 4: Simplify right side
    79,745.65x = 5,657,394,770.32
  5. Step 5: Solve for x
    x = 5,657,394,770.32/79,745.65
  6. Step 6: Final answer
    x = 70,942.99

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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.