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Finding the Fourth Proportional to 99,458.37, 137,264.22 and 55,858.07

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Solution

The fourth proportional to 99,458.37, 137,264.22 and 55,858.07 is: 77,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,458.37 : 137,264.22 = 55,858.07 : x
  2. Step 2: Convert to fraction form
    99,458.37/137,264.22 = 55,858.07/x
  3. Step 3: Cross multiply
    99,458.37x = 137,264.22 × 55,858.07
  4. Step 4: Simplify right side
    99,458.37x = 7,667,313,980.30
  5. Step 5: Solve for x
    x = 7,667,313,980.30/99,458.37
  6. Step 6: Final answer
    x = 77,090.69

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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.