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Finding the Fourth Proportional to 85,087.66, 127,437.09 and 40,745.56

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Solution

The fourth proportional to 85,087.66, 127,437.09 and 40,745.56 is: 61,025.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,087.66 : 127,437.09 = 40,745.56 : x
  2. Step 2: Convert to fraction form
    85,087.66/127,437.09 = 40,745.56/x
  3. Step 3: Cross multiply
    85,087.66x = 127,437.09 × 40,745.56
  4. Step 4: Simplify right side
    85,087.66x = 5,192,495,596.82
  5. Step 5: Solve for x
    x = 5,192,495,596.82/85,087.66
  6. Step 6: Final answer
    x = 61,025.25

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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.