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Finding the Fourth Proportional to 48,488.78, 66,913.70 and 26,978.30

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Solution

The fourth proportional to 48,488.78, 66,913.70 and 26,978.30 is: 37,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,488.78 : 66,913.70 = 26,978.30 : x
  2. Step 2: Convert to fraction form
    48,488.78/66,913.70 = 26,978.30/x
  3. Step 3: Cross multiply
    48,488.78x = 66,913.70 × 26,978.30
  4. Step 4: Simplify right side
    48,488.78x = 1,805,217,605.59
  5. Step 5: Solve for x
    x = 1,805,217,605.59/48,488.78
  6. Step 6: Final answer
    x = 37,229.60

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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.