Home / 81,025.40-121,537.56-43,603.08

Finding the Fourth Proportional to 81,025.40, 121,537.56 and 43,603.08

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Solution

The fourth proportional to 81,025.40, 121,537.56 and 43,603.08 is: 65,404.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,025.40 : 121,537.56 = 43,603.08 : x
  2. Step 2: Convert to fraction form
    81,025.40/121,537.56 = 43,603.08/x
  3. Step 3: Cross multiply
    81,025.40x = 121,537.56 × 43,603.08
  4. Step 4: Simplify right side
    81,025.40x = 5,299,411,951.68
  5. Step 5: Solve for x
    x = 5,299,411,951.68/81,025.40
  6. Step 6: Final answer
    x = 65,404.33

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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.