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Finding the Fourth Proportional to 54,656.40, 81,984.60 and 34,957.20

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Solution

The fourth proportional to 54,656.40, 81,984.60 and 34,957.20 is: 52,435.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,656.40 : 81,984.60 = 34,957.20 : x
  2. Step 2: Convert to fraction form
    54,656.40/81,984.60 = 34,957.20/x
  3. Step 3: Cross multiply
    54,656.40x = 81,984.60 × 34,957.20
  4. Step 4: Simplify right side
    54,656.40x = 2,865,952,059.12
  5. Step 5: Solve for x
    x = 2,865,952,059.12/54,656.40
  6. Step 6: Final answer
    x = 52,435.80

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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.