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Finding the Fourth Proportional to 64,476.90, 96,715.35 and 20,103.30

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Solution

The fourth proportional to 64,476.90, 96,715.35 and 20,103.30 is: 30,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,476.90 : 96,715.35 = 20,103.30 : x
  2. Step 2: Convert to fraction form
    64,476.90/96,715.35 = 20,103.30/x
  3. Step 3: Cross multiply
    64,476.90x = 96,715.35 × 20,103.30
  4. Step 4: Simplify right side
    64,476.90x = 1,944,297,695.66
  5. Step 5: Solve for x
    x = 1,944,297,695.66/64,476.90
  6. Step 6: Final answer
    x = 30,154.95

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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.