Home / 81,804.08-122,771.75-42,372.47

Finding the Fourth Proportional to 81,804.08, 122,771.75 and 42,372.47

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Solution

The fourth proportional to 81,804.08, 122,771.75 and 42,372.47 is: 63,592.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,804.08 : 122,771.75 = 42,372.47 : x
  2. Step 2: Convert to fraction form
    81,804.08/122,771.75 = 42,372.47/x
  3. Step 3: Cross multiply
    81,804.08x = 122,771.75 × 42,372.47
  4. Step 4: Simplify right side
    81,804.08x = 5,202,142,293.72
  5. Step 5: Solve for x
    x = 5,202,142,293.72/81,804.08
  6. Step 6: Final answer
    x = 63,592.70

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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.