Home / 83,645.16-115,391.82-53,415.34

Finding the Fourth Proportional to 83,645.16, 115,391.82 and 53,415.34

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Solution

The fourth proportional to 83,645.16, 115,391.82 and 53,415.34 is: 73,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,645.16 : 115,391.82 = 53,415.34 : x
  2. Step 2: Convert to fraction form
    83,645.16/115,391.82 = 53,415.34/x
  3. Step 3: Cross multiply
    83,645.16x = 115,391.82 × 53,415.34
  4. Step 4: Simplify right side
    83,645.16x = 6,163,693,298.52
  5. Step 5: Solve for x
    x = 6,163,693,298.52/83,645.16
  6. Step 6: Final answer
    x = 73,688.58

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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.