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Finding the Fourth Proportional to 54,175.20, 81,262.80 and 39,314.40

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Solution

The fourth proportional to 54,175.20, 81,262.80 and 39,314.40 is: 58,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,175.20 : 81,262.80 = 39,314.40 : x
  2. Step 2: Convert to fraction form
    54,175.20/81,262.80 = 39,314.40/x
  3. Step 3: Cross multiply
    54,175.20x = 81,262.80 × 39,314.40
  4. Step 4: Simplify right side
    54,175.20x = 3,194,798,224.32
  5. Step 5: Solve for x
    x = 3,194,798,224.32/54,175.20
  6. Step 6: Final answer
    x = 58,971.60

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1.5x scale

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.