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Finding the Fourth Proportional to 98,025.60, 135,269.72 and 54,415.91

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Solution

The fourth proportional to 98,025.60, 135,269.72 and 54,415.91 is: 75,090.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,025.60 : 135,269.72 = 54,415.91 : x
  2. Step 2: Convert to fraction form
    98,025.60/135,269.72 = 54,415.91/x
  3. Step 3: Cross multiply
    98,025.60x = 135,269.72 × 54,415.91
  4. Step 4: Simplify right side
    98,025.60x = 7,360,824,909.25
  5. Step 5: Solve for x
    x = 7,360,824,909.25/98,025.60
  6. Step 6: Final answer
    x = 75,090.84

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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.