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Finding the Fourth Proportional to 99,029.91, 136,678.74 and 58,765.87

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Solution

The fourth proportional to 99,029.91, 136,678.74 and 58,765.87 is: 81,107.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,029.91 : 136,678.74 = 58,765.87 : x
  2. Step 2: Convert to fraction form
    99,029.91/136,678.74 = 58,765.87/x
  3. Step 3: Cross multiply
    99,029.91x = 136,678.74 × 58,765.87
  4. Step 4: Simplify right side
    99,029.91x = 8,032,045,347.64
  5. Step 5: Solve for x
    x = 8,032,045,347.64/99,029.91
  6. Step 6: Final answer
    x = 81,107.27

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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.