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Finding the Fourth Proportional to 70,002.66, 105,020.10 and 21,968.61

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Solution

The fourth proportional to 70,002.66, 105,020.10 and 21,968.61 is: 32,957.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,002.66 : 105,020.10 = 21,968.61 : x
  2. Step 2: Convert to fraction form
    70,002.66/105,020.10 = 21,968.61/x
  3. Step 3: Cross multiply
    70,002.66x = 105,020.10 × 21,968.61
  4. Step 4: Simplify right side
    70,002.66x = 2,307,145,619.06
  5. Step 5: Solve for x
    x = 2,307,145,619.06/70,002.66
  6. Step 6: Final answer
    x = 32,957.97

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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.