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Finding the Fourth Proportional to 85,551.31, 128,340.81 and 26,373.14

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Solution

The fourth proportional to 85,551.31, 128,340.81 and 26,373.14 is: 39,563.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,551.31 : 128,340.81 = 26,373.14 : x
  2. Step 2: Convert to fraction form
    85,551.31/128,340.81 = 26,373.14/x
  3. Step 3: Cross multiply
    85,551.31x = 128,340.81 × 26,373.14
  4. Step 4: Simplify right side
    85,551.31x = 3,384,750,149.84
  5. Step 5: Solve for x
    x = 3,384,750,149.84/85,551.31
  6. Step 6: Final answer
    x = 39,563.98

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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.