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Finding the Fourth Proportional to 66,520.72, 99,831.84 and 24,440.68

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Solution

The fourth proportional to 66,520.72, 99,831.84 and 24,440.68 is: 36,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,520.72 : 99,831.84 = 24,440.68 : x
  2. Step 2: Convert to fraction form
    66,520.72/99,831.84 = 24,440.68/x
  3. Step 3: Cross multiply
    66,520.72x = 99,831.84 × 24,440.68
  4. Step 4: Simplify right side
    66,520.72x = 2,439,958,055.25
  5. Step 5: Solve for x
    x = 2,439,958,055.25/66,520.72
  6. Step 6: Final answer
    x = 36,679.67

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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.