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Finding the Fourth Proportional to 73,089.90, 109,625.74 and 20,503.49

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Solution

The fourth proportional to 73,089.90, 109,625.74 and 20,503.49 is: 30,752.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,089.90 : 109,625.74 = 20,503.49 : x
  2. Step 2: Convert to fraction form
    73,089.90/109,625.74 = 20,503.49/x
  3. Step 3: Cross multiply
    73,089.90x = 109,625.74 × 20,503.49
  4. Step 4: Simplify right side
    73,089.90x = 2,247,709,613.19
  5. Step 5: Solve for x
    x = 2,247,709,613.19/73,089.90
  6. Step 6: Final answer
    x = 30,752.67

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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.