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Finding the Fourth Proportional to 72,617.74, 100,246.61 and 48,458.91

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Solution

The fourth proportional to 72,617.74, 100,246.61 and 48,458.91 is: 66,896.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617.74 : 100,246.61 = 48,458.91 : x
  2. Step 2: Convert to fraction form
    72,617.74/100,246.61 = 48,458.91/x
  3. Step 3: Cross multiply
    72,617.74x = 100,246.61 × 48,458.91
  4. Step 4: Simplify right side
    72,617.74x = 4,857,841,384.98
  5. Step 5: Solve for x
    x = 4,857,841,384.98/72,617.74
  6. Step 6: Final answer
    x = 66,896.07

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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.