Home / 85,132.28-117,378.45-53,245.82

Finding the Fourth Proportional to 85,132.28, 117,378.45 and 53,245.82

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Solution

The fourth proportional to 85,132.28, 117,378.45 and 53,245.82 is: 73,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,132.28 : 117,378.45 = 53,245.82 : x
  2. Step 2: Convert to fraction form
    85,132.28/117,378.45 = 53,245.82/x
  3. Step 3: Cross multiply
    85,132.28x = 117,378.45 × 53,245.82
  4. Step 4: Simplify right side
    85,132.28x = 6,249,911,820.58
  5. Step 5: Solve for x
    x = 6,249,911,820.58/85,132.28
  6. Step 6: Final answer
    x = 73,414.12

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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.