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Finding the Fourth Proportional to 42,195.70, 63,238.18 and 31,050.20

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Solution

The fourth proportional to 42,195.70, 63,238.18 and 31,050.20 is: 46,534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,195.70 : 63,238.18 = 31,050.20 : x
  2. Step 2: Convert to fraction form
    42,195.70/63,238.18 = 31,050.20/x
  3. Step 3: Cross multiply
    42,195.70x = 63,238.18 × 31,050.20
  4. Step 4: Simplify right side
    42,195.70x = 1,963,558,136.64
  5. Step 5: Solve for x
    x = 1,963,558,136.64/42,195.70
  6. Step 6: Final answer
    x = 46,534.56

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.