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Finding the Fourth Proportional to 56,880.73, 78,511.02 and 33,015.09

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Solution

The fourth proportional to 56,880.73, 78,511.02 and 33,015.09 is: 45,569.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,880.73 : 78,511.02 = 33,015.09 : x
  2. Step 2: Convert to fraction form
    56,880.73/78,511.02 = 33,015.09/x
  3. Step 3: Cross multiply
    56,880.73x = 78,511.02 × 33,015.09
  4. Step 4: Simplify right side
    56,880.73x = 2,592,048,747.61
  5. Step 5: Solve for x
    x = 2,592,048,747.61/56,880.73
  6. Step 6: Final answer
    x = 45,569.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.