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Finding the Fourth Proportional to 64,405.92, 88,880.40 and 35,727.60

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Solution

The fourth proportional to 64,405.92, 88,880.40 and 35,727.60 is: 49,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,405.92 : 88,880.40 = 35,727.60 : x
  2. Step 2: Convert to fraction form
    64,405.92/88,880.40 = 35,727.60/x
  3. Step 3: Cross multiply
    64,405.92x = 88,880.40 × 35,727.60
  4. Step 4: Simplify right side
    64,405.92x = 3,175,483,379.04
  5. Step 5: Solve for x
    x = 3,175,483,379.04/64,405.92
  6. Step 6: Final answer
    x = 49,304.22

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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.