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Finding the Fourth Proportional to 60,739.71, 91,122.51 and 21,299.19

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Solution

The fourth proportional to 60,739.71, 91,122.51 and 21,299.19 is: 31,953.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,739.71 : 91,122.51 = 21,299.19 : x
  2. Step 2: Convert to fraction form
    60,739.71/91,122.51 = 21,299.19/x
  3. Step 3: Cross multiply
    60,739.71x = 91,122.51 × 21,299.19
  4. Step 4: Simplify right side
    60,739.71x = 1,940,835,653.77
  5. Step 5: Solve for x
    x = 1,940,835,653.77/60,739.71
  6. Step 6: Final answer
    x = 31,953.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.