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Finding the Fourth Proportional to 98,069.52, 135,363.72 and 57,806.64

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Solution

The fourth proportional to 98,069.52, 135,363.72 and 57,806.64 is: 79,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,069.52 : 135,363.72 = 57,806.64 : x
  2. Step 2: Convert to fraction form
    98,069.52/135,363.72 = 57,806.64/x
  3. Step 3: Cross multiply
    98,069.52x = 135,363.72 × 57,806.64
  4. Step 4: Simplify right side
    98,069.52x = 7,824,921,831.10
  5. Step 5: Solve for x
    x = 7,824,921,831.10/98,069.52
  6. Step 6: Final answer
    x = 79,789.54

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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.