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Finding the Fourth Proportional to 63,128.80, 94,568.40 and 40,957.60

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Solution

The fourth proportional to 63,128.80, 94,568.40 and 40,957.60 is: 61,355.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,128.80 : 94,568.40 = 40,957.60 : x
  2. Step 2: Convert to fraction form
    63,128.80/94,568.40 = 40,957.60/x
  3. Step 3: Cross multiply
    63,128.80x = 94,568.40 × 40,957.60
  4. Step 4: Simplify right side
    63,128.80x = 3,873,294,699.84
  5. Step 5: Solve for x
    x = 3,873,294,699.84/63,128.80
  6. Step 6: Final answer
    x = 61,355.43

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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.