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Finding the Fourth Proportional to 57,901, 86,802.22 and 55,145.36

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Solution

The fourth proportional to 57,901, 86,802.22 and 55,145.36 is: 82,671.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,901 : 86,802.22 = 55,145.36 : x
  2. Step 2: Convert to fraction form
    57,901/86,802.22 = 55,145.36/x
  3. Step 3: Cross multiply
    57,901x = 86,802.22 × 55,145.36
  4. Step 4: Simplify right side
    57,901x = 4,786,739,670.70
  5. Step 5: Solve for x
    x = 4,786,739,670.70/57,901
  6. Step 6: Final answer
    x = 82,671.11

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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.