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Finding the Fourth Proportional to 98,373.87, 135,739.01 and 55,347.39

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Solution

The fourth proportional to 98,373.87, 135,739.01 and 55,347.39 is: 76,369.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,373.87 : 135,739.01 = 55,347.39 : x
  2. Step 2: Convert to fraction form
    98,373.87/135,739.01 = 55,347.39/x
  3. Step 3: Cross multiply
    98,373.87x = 135,739.01 × 55,347.39
  4. Step 4: Simplify right side
    98,373.87x = 7,512,798,969.25
  5. Step 5: Solve for x
    x = 7,512,798,969.25/98,373.87
  6. Step 6: Final answer
    x = 76,369.87

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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.