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Finding the Fourth Proportional to 88,855.76, 133,128.12 and 51,842

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Solution

The fourth proportional to 88,855.76, 133,128.12 and 51,842 is: 77,672.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,855.76 : 133,128.12 = 51,842 : x
  2. Step 2: Convert to fraction form
    88,855.76/133,128.12 = 51,842/x
  3. Step 3: Cross multiply
    88,855.76x = 133,128.12 × 51,842
  4. Step 4: Simplify right side
    88,855.76x = 6,901,627,997.04
  5. Step 5: Solve for x
    x = 6,901,627,997.04/88,855.76
  6. Step 6: Final answer
    x = 77,672.26

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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.