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Finding the Fourth Proportional to 64,703.31, 96,930.57 and 39,670.36

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Solution

The fourth proportional to 64,703.31, 96,930.57 and 39,670.36 is: 59,429.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,703.31 : 96,930.57 = 39,670.36 : x
  2. Step 2: Convert to fraction form
    64,703.31/96,930.57 = 39,670.36/x
  3. Step 3: Cross multiply
    64,703.31x = 96,930.57 × 39,670.36
  4. Step 4: Simplify right side
    64,703.31x = 3,845,270,513.34
  5. Step 5: Solve for x
    x = 3,845,270,513.34/64,703.31
  6. Step 6: Final answer
    x = 59,429.27

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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.