Home / 42,549.36-63,837.12-21,787.44

Finding the Fourth Proportional to 42,549.36, 63,837.12 and 21,787.44

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Solution

The fourth proportional to 42,549.36, 63,837.12 and 21,787.44 is: 32,687.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,549.36 : 63,837.12 = 21,787.44 : x
  2. Step 2: Convert to fraction form
    42,549.36/63,837.12 = 21,787.44/x
  3. Step 3: Cross multiply
    42,549.36x = 63,837.12 × 21,787.44
  4. Step 4: Simplify right side
    42,549.36x = 1,390,847,421.77
  5. Step 5: Solve for x
    x = 1,390,847,421.77/42,549.36
  6. Step 6: Final answer
    x = 32,687.86

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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.