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Finding the Fourth Proportional to 85,966.47, 128,927.84 and 33,347.25

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Solution

The fourth proportional to 85,966.47, 128,927.84 and 33,347.25 is: 50,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,966.47 : 128,927.84 = 33,347.25 : x
  2. Step 2: Convert to fraction form
    85,966.47/128,927.84 = 33,347.25/x
  3. Step 3: Cross multiply
    85,966.47x = 128,927.84 × 33,347.25
  4. Step 4: Simplify right side
    85,966.47x = 4,299,388,745.70
  5. Step 5: Solve for x
    x = 4,299,388,745.70/85,966.47
  6. Step 6: Final answer
    x = 50,012.39

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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.