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Finding the Fourth Proportional to 42,551.52, 63,866.64 and 21,506.37

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Solution

The fourth proportional to 42,551.52, 63,866.64 and 21,506.37 is: 32,279.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,551.52 : 63,866.64 = 21,506.37 : x
  2. Step 2: Convert to fraction form
    42,551.52/63,866.64 = 21,506.37/x
  3. Step 3: Cross multiply
    42,551.52x = 63,866.64 × 21,506.37
  4. Step 4: Simplify right side
    42,551.52x = 1,373,539,590.50
  5. Step 5: Solve for x
    x = 1,373,539,590.50/42,551.52
  6. Step 6: Final answer
    x = 32,279.45

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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.