Home / 81,568.11-122,337.59-51,897.81

Finding the Fourth Proportional to 81,568.11, 122,337.59 and 51,897.81

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Solution

The fourth proportional to 81,568.11, 122,337.59 and 51,897.81 is: 77,837.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,568.11 : 122,337.59 = 51,897.81 : x
  2. Step 2: Convert to fraction form
    81,568.11/122,337.59 = 51,897.81/x
  3. Step 3: Cross multiply
    81,568.11x = 122,337.59 × 51,897.81
  4. Step 4: Simplify right side
    81,568.11x = 6,349,053,492.88
  5. Step 5: Solve for x
    x = 6,349,053,492.88/81,568.11
  6. Step 6: Final answer
    x = 77,837.44

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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.