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Finding the Fourth Proportional to 66,446, 91,717.69 and 39,596.93

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Solution

The fourth proportional to 66,446, 91,717.69 and 39,596.93 is: 54,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446 : 91,717.69 = 39,596.93 : x
  2. Step 2: Convert to fraction form
    66,446/91,717.69 = 39,596.93/x
  3. Step 3: Cross multiply
    66,446x = 91,717.69 × 39,596.93
  4. Step 4: Simplify right side
    66,446x = 3,631,738,950.69
  5. Step 5: Solve for x
    x = 3,631,738,950.69/66,446
  6. Step 6: Final answer
    x = 54,657.00

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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.