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Finding the Fourth Proportional to 64,123.90, 96,087.40 and 39,126.48

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Solution

The fourth proportional to 64,123.90, 96,087.40 and 39,126.48 is: 58,629.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,123.90 : 96,087.40 = 39,126.48 : x
  2. Step 2: Convert to fraction form
    64,123.90/96,087.40 = 39,126.48/x
  3. Step 3: Cross multiply
    64,123.90x = 96,087.40 × 39,126.48
  4. Step 4: Simplify right side
    64,123.90x = 3,759,561,734.35
  5. Step 5: Solve for x
    x = 3,759,561,734.35/64,123.90
  6. Step 6: Final answer
    x = 58,629.65

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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.