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Finding the Fourth Proportional to 85,008.94, 127,513.64 and 40,625.61

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Solution

The fourth proportional to 85,008.94, 127,513.64 and 40,625.61 is: 60,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,008.94 : 127,513.64 = 40,625.61 : x
  2. Step 2: Convert to fraction form
    85,008.94/127,513.64 = 40,625.61/x
  3. Step 3: Cross multiply
    85,008.94x = 127,513.64 × 40,625.61
  4. Step 4: Simplify right side
    85,008.94x = 5,180,319,408.32
  5. Step 5: Solve for x
    x = 5,180,319,408.32/85,008.94
  6. Step 6: Final answer
    x = 60,938.52

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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.