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Finding the Fourth Proportional to 85,218.48, 127,829.34 and 29,071.44

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Solution

The fourth proportional to 85,218.48, 127,829.34 and 29,071.44 is: 43,607.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,218.48 : 127,829.34 = 29,071.44 : x
  2. Step 2: Convert to fraction form
    85,218.48/127,829.34 = 29,071.44/x
  3. Step 3: Cross multiply
    85,218.48x = 127,829.34 × 29,071.44
  4. Step 4: Simplify right side
    85,218.48x = 3,716,182,988.05
  5. Step 5: Solve for x
    x = 3,716,182,988.05/85,218.48
  6. Step 6: Final answer
    x = 43,607.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.