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Finding the Fourth Proportional to 89,873.87, 124,070.89 and 55,893.31

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Solution

The fourth proportional to 89,873.87, 124,070.89 and 55,893.31 is: 77,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,873.87 : 124,070.89 = 55,893.31 : x
  2. Step 2: Convert to fraction form
    89,873.87/124,070.89 = 55,893.31/x
  3. Step 3: Cross multiply
    89,873.87x = 124,070.89 × 55,893.31
  4. Step 4: Simplify right side
    89,873.87x = 6,934,731,816.92
  5. Step 5: Solve for x
    x = 6,934,731,816.92/89,873.87
  6. Step 6: Final answer
    x = 77,160.71

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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.