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Finding the Fourth Proportional to 74,220.96, 111,349.80 and 21,630.88

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Solution

The fourth proportional to 74,220.96, 111,349.80 and 21,630.88 is: 32,451.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220.96 : 111,349.80 = 21,630.88 : x
  2. Step 2: Convert to fraction form
    74,220.96/111,349.80 = 21,630.88/x
  3. Step 3: Cross multiply
    74,220.96x = 111,349.80 × 21,630.88
  4. Step 4: Simplify right side
    74,220.96x = 2,408,594,161.82
  5. Step 5: Solve for x
    x = 2,408,594,161.82/74,220.96
  6. Step 6: Final answer
    x = 32,451.67

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1.5x scale

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.