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Finding the Fourth Proportional to 98,601, 136,069.38 and 53,889

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Solution

The fourth proportional to 98,601, 136,069.38 and 53,889 is: 74,366.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,601 : 136,069.38 = 53,889 : x
  2. Step 2: Convert to fraction form
    98,601/136,069.38 = 53,889/x
  3. Step 3: Cross multiply
    98,601x = 136,069.38 × 53,889
  4. Step 4: Simplify right side
    98,601x = 7,332,642,818.82
  5. Step 5: Solve for x
    x = 7,332,642,818.82/98,601
  6. Step 6: Final answer
    x = 74,366.82

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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.