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Finding the Fourth Proportional to 69,995.52, 105,036.82 and 28,442.52

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Solution

The fourth proportional to 69,995.52, 105,036.82 and 28,442.52 is: 42,681.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,995.52 : 105,036.82 = 28,442.52 : x
  2. Step 2: Convert to fraction form
    69,995.52/105,036.82 = 28,442.52/x
  3. Step 3: Cross multiply
    69,995.52x = 105,036.82 × 28,442.52
  4. Step 4: Simplify right side
    69,995.52x = 2,987,511,853.59
  5. Step 5: Solve for x
    x = 2,987,511,853.59/69,995.52
  6. Step 6: Final answer
    x = 42,681.47

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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.