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Finding the Fourth Proportional to 64,304.21, 88,744.49 and 38,816.78

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Solution

The fourth proportional to 64,304.21, 88,744.49 and 38,816.78 is: 53,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,304.21 : 88,744.49 = 38,816.78 : x
  2. Step 2: Convert to fraction form
    64,304.21/88,744.49 = 38,816.78/x
  3. Step 3: Cross multiply
    64,304.21x = 88,744.49 × 38,816.78
  4. Step 4: Simplify right side
    64,304.21x = 3,444,774,706.74
  5. Step 5: Solve for x
    x = 3,444,774,706.74/64,304.21
  6. Step 6: Final answer
    x = 53,569.98

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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.