Home / 42,648.52-63,972.78-21,858.76

Finding the Fourth Proportional to 42,648.52, 63,972.78 and 21,858.76

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Solution

The fourth proportional to 42,648.52, 63,972.78 and 21,858.76 is: 32,788.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,648.52 : 63,972.78 = 21,858.76 : x
  2. Step 2: Convert to fraction form
    42,648.52/63,972.78 = 21,858.76/x
  3. Step 3: Cross multiply
    42,648.52x = 63,972.78 × 21,858.76
  4. Step 4: Simplify right side
    42,648.52x = 1,398,365,644.55
  5. Step 5: Solve for x
    x = 1,398,365,644.55/42,648.52
  6. Step 6: Final answer
    x = 32,788.14

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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.