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Finding the Fourth Proportional to 70,762.38, 106,107 and 20,836.02

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Solution

The fourth proportional to 70,762.38, 106,107 and 20,836.02 is: 31,243.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,762.38 : 106,107 = 20,836.02 : x
  2. Step 2: Convert to fraction form
    70,762.38/106,107 = 20,836.02/x
  3. Step 3: Cross multiply
    70,762.38x = 106,107 × 20,836.02
  4. Step 4: Simplify right side
    70,762.38x = 2,210,847,574.14
  5. Step 5: Solve for x
    x = 2,210,847,574.14/70,762.38
  6. Step 6: Final answer
    x = 31,243.26

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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.