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Finding the Fourth Proportional to 85,087.72, 127,674.63 and 35,203.61

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Solution

The fourth proportional to 85,087.72, 127,674.63 and 35,203.61 is: 52,823.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,087.72 : 127,674.63 = 35,203.61 : x
  2. Step 2: Convert to fraction form
    85,087.72/127,674.63 = 35,203.61/x
  3. Step 3: Cross multiply
    85,087.72x = 127,674.63 × 35,203.61
  4. Step 4: Simplify right side
    85,087.72x = 4,494,607,881.41
  5. Step 5: Solve for x
    x = 4,494,607,881.41/85,087.72
  6. Step 6: Final answer
    x = 52,823.23

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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.