Home / 81,813.92-122,643.12-52,148.48

Finding the Fourth Proportional to 81,813.92, 122,643.12 and 52,148.48

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Solution

The fourth proportional to 81,813.92, 122,643.12 and 52,148.48 is: 78,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,813.92 : 122,643.12 = 52,148.48 : x
  2. Step 2: Convert to fraction form
    81,813.92/122,643.12 = 52,148.48/x
  3. Step 3: Cross multiply
    81,813.92x = 122,643.12 × 52,148.48
  4. Step 4: Simplify right side
    81,813.92x = 6,395,652,290.46
  5. Step 5: Solve for x
    x = 6,395,652,290.46/81,813.92
  6. Step 6: Final answer
    x = 78,173.16

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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.