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Finding the Fourth Proportional to 79,171.48, 109,226.80 and 51,962.68

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Solution

The fourth proportional to 79,171.48, 109,226.80 and 51,962.68 is: 71,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,171.48 : 109,226.80 = 51,962.68 : x
  2. Step 2: Convert to fraction form
    79,171.48/109,226.80 = 51,962.68/x
  3. Step 3: Cross multiply
    79,171.48x = 109,226.80 × 51,962.68
  4. Step 4: Simplify right side
    79,171.48x = 5,675,717,255.82
  5. Step 5: Solve for x
    x = 5,675,717,255.82/79,171.48
  6. Step 6: Final answer
    x = 71,688.91

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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.