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Finding the Fourth Proportional to 64,920.43, 97,370.88 and 20,541.42

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Solution

The fourth proportional to 64,920.43, 97,370.88 and 20,541.42 is: 30,809.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,920.43 : 97,370.88 = 20,541.42 : x
  2. Step 2: Convert to fraction form
    64,920.43/97,370.88 = 20,541.42/x
  3. Step 3: Cross multiply
    64,920.43x = 97,370.88 × 20,541.42
  4. Step 4: Simplify right side
    64,920.43x = 2,000,136,141.85
  5. Step 5: Solve for x
    x = 2,000,136,141.85/64,920.43
  6. Step 6: Final answer
    x = 30,809.04

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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.