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Finding the Fourth Proportional to 98,601.75, 136,070.42 and 53,889.75

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Solution

The fourth proportional to 98,601.75, 136,070.42 and 53,889.75 is: 74,367.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,601.75 : 136,070.42 = 53,889.75 : x
  2. Step 2: Convert to fraction form
    98,601.75/136,070.42 = 53,889.75/x
  3. Step 3: Cross multiply
    98,601.75x = 136,070.42 × 53,889.75
  4. Step 4: Simplify right side
    98,601.75x = 7,332,800,646.75
  5. Step 5: Solve for x
    x = 7,332,800,646.75/98,601.75
  6. Step 6: Final answer
    x = 74,367.86

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1.5x scale

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.