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Finding the Fourth Proportional to 45,349.92, 67,955.64 and 19,040.36

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Solution

The fourth proportional to 45,349.92, 67,955.64 and 19,040.36 is: 28,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,349.92 : 67,955.64 = 19,040.36 : x
  2. Step 2: Convert to fraction form
    45,349.92/67,955.64 = 19,040.36/x
  3. Step 3: Cross multiply
    45,349.92x = 67,955.64 × 19,040.36
  4. Step 4: Simplify right side
    45,349.92x = 1,293,899,849.63
  5. Step 5: Solve for x
    x = 1,293,899,849.63/45,349.92
  6. Step 6: Final answer
    x = 28,531.47

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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.