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Finding the Fourth Proportional to 98,368.37, 135,731.42 and 55,341.88

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Solution

The fourth proportional to 98,368.37, 135,731.42 and 55,341.88 is: 76,362.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,368.37 : 135,731.42 = 55,341.88 : x
  2. Step 2: Convert to fraction form
    98,368.37/135,731.42 = 55,341.88/x
  3. Step 3: Cross multiply
    98,368.37x = 135,731.42 × 55,341.88
  4. Step 4: Simplify right side
    98,368.37x = 7,511,631,341.83
  5. Step 5: Solve for x
    x = 7,511,631,341.83/98,368.37
  6. Step 6: Final answer
    x = 76,362.27

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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.