Home / 85,140.28-117,389.52-53,253.82

Finding the Fourth Proportional to 85,140.28, 117,389.52 and 53,253.82

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Solution

The fourth proportional to 85,140.28, 117,389.52 and 53,253.82 is: 73,425.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.28 : 117,389.52 = 53,253.82 : x
  2. Step 2: Convert to fraction form
    85,140.28/117,389.52 = 53,253.82/x
  3. Step 3: Cross multiply
    85,140.28x = 117,389.52 × 53,253.82
  4. Step 4: Simplify right side
    85,140.28x = 6,251,440,367.97
  5. Step 5: Solve for x
    x = 6,251,440,367.97/85,140.28
  6. Step 6: Final answer
    x = 73,425.18

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1.5x scale

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.