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Finding the Fourth Proportional to 57,661.53, 79,547.81 and 36,138.03

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Solution

The fourth proportional to 57,661.53, 79,547.81 and 36,138.03 is: 49,854.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,661.53 : 79,547.81 = 36,138.03 : x
  2. Step 2: Convert to fraction form
    57,661.53/79,547.81 = 36,138.03/x
  3. Step 3: Cross multiply
    57,661.53x = 79,547.81 × 36,138.03
  4. Step 4: Simplify right side
    57,661.53x = 2,874,700,963.52
  5. Step 5: Solve for x
    x = 2,874,700,963.52/57,661.53
  6. Step 6: Final answer
    x = 49,854.75

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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.