Home / 85,130.28-117,375.69-53,243.82

Finding the Fourth Proportional to 85,130.28, 117,375.69 and 53,243.82

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Solution

The fourth proportional to 85,130.28, 117,375.69 and 53,243.82 is: 73,411.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,130.28 : 117,375.69 = 53,243.82 : x
  2. Step 2: Convert to fraction form
    85,130.28/117,375.69 = 53,243.82/x
  3. Step 3: Cross multiply
    85,130.28x = 117,375.69 × 53,243.82
  4. Step 4: Simplify right side
    85,130.28x = 6,249,530,110.74
  5. Step 5: Solve for x
    x = 6,249,530,110.74/85,130.28
  6. Step 6: Final answer
    x = 73,411.37

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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.