Home / 42,122.70-63,157.05-19,907.10

Finding the Fourth Proportional to 42,122.70, 63,157.05 and 19,907.10

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Solution

The fourth proportional to 42,122.70, 63,157.05 and 19,907.10 is: 29,847.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,122.70 : 63,157.05 = 19,907.10 : x
  2. Step 2: Convert to fraction form
    42,122.70/63,157.05 = 19,907.10/x
  3. Step 3: Cross multiply
    42,122.70x = 63,157.05 × 19,907.10
  4. Step 4: Simplify right side
    42,122.70x = 1,257,273,710.06
  5. Step 5: Solve for x
    x = 1,257,273,710.06/42,122.70
  6. Step 6: Final answer
    x = 29,847.89

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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.