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Finding the Fourth Proportional to 88,453.60, 121,858.32 and 61,549.90

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Solution

The fourth proportional to 88,453.60, 121,858.32 and 61,549.90 is: 84,794.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,453.60 : 121,858.32 = 61,549.90 : x
  2. Step 2: Convert to fraction form
    88,453.60/121,858.32 = 61,549.90/x
  3. Step 3: Cross multiply
    88,453.60x = 121,858.32 × 61,549.90
  4. Step 4: Simplify right side
    88,453.60x = 7,500,367,410.17
  5. Step 5: Solve for x
    x = 7,500,367,410.17/88,453.60
  6. Step 6: Final answer
    x = 84,794.37

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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.