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Finding the Fourth Proportional to 54,639.28, 75,404.07 and 31,980.38

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Solution

The fourth proportional to 54,639.28, 75,404.07 and 31,980.38 is: 44,134.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,639.28 : 75,404.07 = 31,980.38 : x
  2. Step 2: Convert to fraction form
    54,639.28/75,404.07 = 31,980.38/x
  3. Step 3: Cross multiply
    54,639.28x = 75,404.07 × 31,980.38
  4. Step 4: Simplify right side
    54,639.28x = 2,411,450,435.13
  5. Step 5: Solve for x
    x = 2,411,450,435.13/54,639.28
  6. Step 6: Final answer
    x = 44,134.01

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1.5x scale

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.