Home / 70,686.10-106,029.62-20,766

Finding the Fourth Proportional to 70,686.10, 106,029.62 and 20,766

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Solution

The fourth proportional to 70,686.10, 106,029.62 and 20,766 is: 31,149.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.10 : 106,029.62 = 20,766 : x
  2. Step 2: Convert to fraction form
    70,686.10/106,029.62 = 20,766/x
  3. Step 3: Cross multiply
    70,686.10x = 106,029.62 × 20,766
  4. Step 4: Simplify right side
    70,686.10x = 2,201,811,088.92
  5. Step 5: Solve for x
    x = 2,201,811,088.92/70,686.10
  6. Step 6: Final answer
    x = 31,149.14

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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.