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Finding the Fourth Proportional to 64,673.84, 96,870.16 and 39,638.32

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Solution

The fourth proportional to 64,673.84, 96,870.16 and 39,638.32 is: 59,371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,673.84 : 96,870.16 = 39,638.32 : x
  2. Step 2: Convert to fraction form
    64,673.84/96,870.16 = 39,638.32/x
  3. Step 3: Cross multiply
    64,673.84x = 96,870.16 × 39,638.32
  4. Step 4: Simplify right side
    64,673.84x = 3,839,770,400.53
  5. Step 5: Solve for x
    x = 3,839,770,400.53/64,673.84
  6. Step 6: Final answer
    x = 59,371.31

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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.