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Finding the Fourth Proportional to 98,591.50, 136,056.27 and 53,879.50

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Solution

The fourth proportional to 98,591.50, 136,056.27 and 53,879.50 is: 74,353.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,591.50 : 136,056.27 = 53,879.50 : x
  2. Step 2: Convert to fraction form
    98,591.50/136,056.27 = 53,879.50/x
  3. Step 3: Cross multiply
    98,591.50x = 136,056.27 × 53,879.50
  4. Step 4: Simplify right side
    98,591.50x = 7,330,643,799.47
  5. Step 5: Solve for x
    x = 7,330,643,799.47/98,591.50
  6. Step 6: Final answer
    x = 74,353.71

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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.