Home / 61,138.14-91,715.78-57,776.64

Finding the Fourth Proportional to 61,138.14, 91,715.78 and 57,776.64

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Solution

The fourth proportional to 61,138.14, 91,715.78 and 57,776.64 is: 86,673.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,138.14 : 91,715.78 = 57,776.64 : x
  2. Step 2: Convert to fraction form
    61,138.14/91,715.78 = 57,776.64/x
  3. Step 3: Cross multiply
    61,138.14x = 91,715.78 × 57,776.64
  4. Step 4: Simplify right side
    61,138.14x = 5,299,029,603.38
  5. Step 5: Solve for x
    x = 5,299,029,603.38/61,138.14
  6. Step 6: Final answer
    x = 86,673.06

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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.