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Finding the Fourth Proportional to 98,410.80, 147,630.60 and 51,667.20

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Solution

The fourth proportional to 98,410.80, 147,630.60 and 51,667.20 is: 77,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,410.80 : 147,630.60 = 51,667.20 : x
  2. Step 2: Convert to fraction form
    98,410.80/147,630.60 = 51,667.20/x
  3. Step 3: Cross multiply
    98,410.80x = 147,630.60 × 51,667.20
  4. Step 4: Simplify right side
    98,410.80x = 7,627,659,736.32
  5. Step 5: Solve for x
    x = 7,627,659,736.32/98,410.80
  6. Step 6: Final answer
    x = 77,508.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.