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Finding the Fourth Proportional to 98,591, 136,055.58 and 53,879

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Solution

The fourth proportional to 98,591, 136,055.58 and 53,879 is: 74,353.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,591 : 136,055.58 = 53,879 : x
  2. Step 2: Convert to fraction form
    98,591/136,055.58 = 53,879/x
  3. Step 3: Cross multiply
    98,591x = 136,055.58 × 53,879
  4. Step 4: Simplify right side
    98,591x = 7,330,538,594.82
  5. Step 5: Solve for x
    x = 7,330,538,594.82/98,591
  6. Step 6: Final answer
    x = 74,353.02

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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.