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Finding the Fourth Proportional to 98,682.87, 136,174.10 and 58,389.63

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Solution

The fourth proportional to 98,682.87, 136,174.10 and 58,389.63 is: 80,572.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,682.87 : 136,174.10 = 58,389.63 : x
  2. Step 2: Convert to fraction form
    98,682.87/136,174.10 = 58,389.63/x
  3. Step 3: Cross multiply
    98,682.87x = 136,174.10 × 58,389.63
  4. Step 4: Simplify right side
    98,682.87x = 7,951,154,511.98
  5. Step 5: Solve for x
    x = 7,951,154,511.98/98,682.87
  6. Step 6: Final answer
    x = 80,572.79

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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.