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Finding the Fourth Proportional to 69,916.50, 96,486.39 and 39,697.02

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Solution

The fourth proportional to 69,916.50, 96,486.39 and 39,697.02 is: 54,782.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,916.50 : 96,486.39 = 39,697.02 : x
  2. Step 2: Convert to fraction form
    69,916.50/96,486.39 = 39,697.02/x
  3. Step 3: Cross multiply
    69,916.50x = 96,486.39 × 39,697.02
  4. Step 4: Simplify right side
    69,916.50x = 3,830,222,153.56
  5. Step 5: Solve for x
    x = 3,830,222,153.56/69,916.50
  6. Step 6: Final answer
    x = 54,782.81

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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.