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Finding the Fourth Proportional to 89,896.80, 124,057.62 and 51,658.86

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Solution

The fourth proportional to 89,896.80, 124,057.62 and 51,658.86 is: 71,289.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,896.80 : 124,057.62 = 51,658.86 : x
  2. Step 2: Convert to fraction form
    89,896.80/124,057.62 = 51,658.86/x
  3. Step 3: Cross multiply
    89,896.80x = 124,057.62 × 51,658.86
  4. Step 4: Simplify right side
    89,896.80x = 6,408,675,223.51
  5. Step 5: Solve for x
    x = 6,408,675,223.51/89,896.80
  6. Step 6: Final answer
    x = 71,289.25

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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.