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Finding the Fourth Proportional to 70,699.96, 106,050.78 and 18,108.04

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Solution

The fourth proportional to 70,699.96, 106,050.78 and 18,108.04 is: 27,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,699.96 : 106,050.78 = 18,108.04 : x
  2. Step 2: Convert to fraction form
    70,699.96/106,050.78 = 18,108.04/x
  3. Step 3: Cross multiply
    70,699.96x = 106,050.78 × 18,108.04
  4. Step 4: Simplify right side
    70,699.96x = 1,920,371,145.48
  5. Step 5: Solve for x
    x = 1,920,371,145.48/70,699.96
  6. Step 6: Final answer
    x = 27,162.27

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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.