Home / 85,239.72-117,632.38-47,509.92

Finding the Fourth Proportional to 85,239.72, 117,632.38 and 47,509.92

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Solution

The fourth proportional to 85,239.72, 117,632.38 and 47,509.92 is: 65,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,239.72 : 117,632.38 = 47,509.92 : x
  2. Step 2: Convert to fraction form
    85,239.72/117,632.38 = 47,509.92/x
  3. Step 3: Cross multiply
    85,239.72x = 117,632.38 × 47,509.92
  4. Step 4: Simplify right side
    85,239.72x = 5,588,704,963.21
  5. Step 5: Solve for x
    x = 5,588,704,963.21/85,239.72
  6. Step 6: Final answer
    x = 65,564.56

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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.