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Finding the Fourth Proportional to 64,471.12, 96,706.71 and 20,101.45

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Solution

The fourth proportional to 64,471.12, 96,706.71 and 20,101.45 is: 30,152.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,471.12 : 96,706.71 = 20,101.45 : x
  2. Step 2: Convert to fraction form
    64,471.12/96,706.71 = 20,101.45/x
  3. Step 3: Cross multiply
    64,471.12x = 96,706.71 × 20,101.45
  4. Step 4: Simplify right side
    64,471.12x = 1,943,945,095.73
  5. Step 5: Solve for x
    x = 1,943,945,095.73/64,471.12
  6. Step 6: Final answer
    x = 30,152.18

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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.