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Finding the Fourth Proportional to 89,063.77, 122,848.89 and 57,272.89

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Solution

The fourth proportional to 89,063.77, 122,848.89 and 57,272.89 is: 78,998.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,063.77 : 122,848.89 = 57,272.89 : x
  2. Step 2: Convert to fraction form
    89,063.77/122,848.89 = 57,272.89/x
  3. Step 3: Cross multiply
    89,063.77x = 122,848.89 × 57,272.89
  4. Step 4: Simplify right side
    89,063.77x = 7,035,910,963.59
  5. Step 5: Solve for x
    x = 7,035,910,963.59/89,063.77
  6. Step 6: Final answer
    x = 78,998.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.