Home / 42,254.85-63,361.80-21,185.85

Finding the Fourth Proportional to 42,254.85, 63,361.80 and 21,185.85

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Solution

The fourth proportional to 42,254.85, 63,361.80 and 21,185.85 is: 31,768.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,254.85 : 63,361.80 = 21,185.85 : x
  2. Step 2: Convert to fraction form
    42,254.85/63,361.80 = 21,185.85/x
  3. Step 3: Cross multiply
    42,254.85x = 63,361.80 × 21,185.85
  4. Step 4: Simplify right side
    42,254.85x = 1,342,373,590.53
  5. Step 5: Solve for x
    x = 1,342,373,590.53/42,254.85
  6. Step 6: Final answer
    x = 31,768.51

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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.