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Finding the Fourth Proportional to 45,398.98, 68,098.47 and 12,119.17

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Solution

The fourth proportional to 45,398.98, 68,098.47 and 12,119.17 is: 18,178.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,398.98 : 68,098.47 = 12,119.17 : x
  2. Step 2: Convert to fraction form
    45,398.98/68,098.47 = 12,119.17/x
  3. Step 3: Cross multiply
    45,398.98x = 68,098.47 × 12,119.17
  4. Step 4: Simplify right side
    45,398.98x = 825,296,934.67
  5. Step 5: Solve for x
    x = 825,296,934.67/45,398.98
  6. Step 6: Final answer
    x = 18,178.76

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1.5x scale

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.