Home / 45,744.68-68,607.40-12,905

Finding the Fourth Proportional to 45,744.68, 68,607.40 and 12,905

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Solution

The fourth proportional to 45,744.68, 68,607.40 and 12,905 is: 19,354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,744.68 : 68,607.40 = 12,905 : x
  2. Step 2: Convert to fraction form
    45,744.68/68,607.40 = 12,905/x
  3. Step 3: Cross multiply
    45,744.68x = 68,607.40 × 12,905
  4. Step 4: Simplify right side
    45,744.68x = 885,378,497.00
  5. Step 5: Solve for x
    x = 885,378,497.00/45,744.68
  6. Step 6: Final answer
    x = 19,354.79

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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.