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Finding the Fourth Proportional to 74,586.87, 102,932.33 and 42,761.79

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Solution

The fourth proportional to 74,586.87, 102,932.33 and 42,761.79 is: 59,012.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,586.87 : 102,932.33 = 42,761.79 : x
  2. Step 2: Convert to fraction form
    74,586.87/102,932.33 = 42,761.79/x
  3. Step 3: Cross multiply
    74,586.87x = 102,932.33 × 42,761.79
  4. Step 4: Simplify right side
    74,586.87x = 4,401,570,465.86
  5. Step 5: Solve for x
    x = 4,401,570,465.86/74,586.87
  6. Step 6: Final answer
    x = 59,012.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.