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Finding the Fourth Proportional to 51,732.63, 77,664.60 and 43,990.65

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Solution

The fourth proportional to 51,732.63, 77,664.60 and 43,990.65 is: 66,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,732.63 : 77,664.60 = 43,990.65 : x
  2. Step 2: Convert to fraction form
    51,732.63/77,664.60 = 43,990.65/x
  3. Step 3: Cross multiply
    51,732.63x = 77,664.60 × 43,990.65
  4. Step 4: Simplify right side
    51,732.63x = 3,416,516,235.99
  5. Step 5: Solve for x
    x = 3,416,516,235.99/51,732.63
  6. Step 6: Final answer
    x = 66,041.80

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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.