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Finding the Fourth Proportional to 90,007.82, 124,206 and 51,761.30

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Solution

The fourth proportional to 90,007.82, 124,206 and 51,761.30 is: 71,427.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,007.82 : 124,206 = 51,761.30 : x
  2. Step 2: Convert to fraction form
    90,007.82/124,206 = 51,761.30/x
  3. Step 3: Cross multiply
    90,007.82x = 124,206 × 51,761.30
  4. Step 4: Simplify right side
    90,007.82x = 6,429,063,406.77
  5. Step 5: Solve for x
    x = 6,429,063,406.77/90,007.82
  6. Step 6: Final answer
    x = 71,427.84

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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.