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Finding the Fourth Proportional to 52,040.66, 78,060.87 and 40,211.63

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Solution

The fourth proportional to 52,040.66, 78,060.87 and 40,211.63 is: 60,317.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,040.66 : 78,060.87 = 40,211.63 : x
  2. Step 2: Convert to fraction form
    52,040.66/78,060.87 = 40,211.63/x
  3. Step 3: Cross multiply
    52,040.66x = 78,060.87 × 40,211.63
  4. Step 4: Simplify right side
    52,040.66x = 3,138,954,431.61
  5. Step 5: Solve for x
    x = 3,138,954,431.61/52,040.66
  6. Step 6: Final answer
    x = 60,317.35

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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.