Home / 103,471.38-142,791.47-62,636.45

Finding the Fourth Proportional to 103,471.38, 142,791.47 and 62,636.45

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Solution

The fourth proportional to 103,471.38, 142,791.47 and 62,636.45 is: 86,438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,471.38 : 142,791.47 = 62,636.45 : x
  2. Step 2: Convert to fraction form
    103,471.38/142,791.47 = 62,636.45/x
  3. Step 3: Cross multiply
    103,471.38x = 142,791.47 × 62,636.45
  4. Step 4: Simplify right side
    103,471.38x = 8,943,949,743.94
  5. Step 5: Solve for x
    x = 8,943,949,743.94/103,471.38
  6. Step 6: Final answer
    x = 86,438.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.