Home / 53,141.55-73,340.52-39,689.45

Finding the Fourth Proportional to 53,141.55, 73,340.52 and 39,689.45

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Solution

The fourth proportional to 53,141.55, 73,340.52 and 39,689.45 is: 54,775.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,141.55 : 73,340.52 = 39,689.45 : x
  2. Step 2: Convert to fraction form
    53,141.55/73,340.52 = 39,689.45/x
  3. Step 3: Cross multiply
    53,141.55x = 73,340.52 × 39,689.45
  4. Step 4: Simplify right side
    53,141.55x = 2,910,844,716.82
  5. Step 5: Solve for x
    x = 2,910,844,716.82/53,141.55
  6. Step 6: Final answer
    x = 54,775.31

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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.