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Finding the Fourth Proportional to 40,304, 60,455.90 and 10,721.80

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Solution

The fourth proportional to 40,304, 60,455.90 and 10,721.80 is: 16,082.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,304 : 60,455.90 = 10,721.80 : x
  2. Step 2: Convert to fraction form
    40,304/60,455.90 = 10,721.80/x
  3. Step 3: Cross multiply
    40,304x = 60,455.90 × 10,721.80
  4. Step 4: Simplify right side
    40,304x = 648,196,068.62
  5. Step 5: Solve for x
    x = 648,196,068.62/40,304
  6. Step 6: Final answer
    x = 16,082.67

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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.