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Finding the Fourth Proportional to 90,379.73, 124,731.50 and 50,106.13

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Solution

The fourth proportional to 90,379.73, 124,731.50 and 50,106.13 is: 69,150.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,379.73 : 124,731.50 = 50,106.13 : x
  2. Step 2: Convert to fraction form
    90,379.73/124,731.50 = 50,106.13/x
  3. Step 3: Cross multiply
    90,379.73x = 124,731.50 × 50,106.13
  4. Step 4: Simplify right side
    90,379.73x = 6,249,812,191.74
  5. Step 5: Solve for x
    x = 6,249,812,191.74/90,379.73
  6. Step 6: Final answer
    x = 69,150.59

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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.