Home / 83,774.10-115,635.20-53,640.58

Finding the Fourth Proportional to 83,774.10, 115,635.20 and 53,640.58

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Solution

The fourth proportional to 83,774.10, 115,635.20 and 53,640.58 is: 74,041.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,774.10 : 115,635.20 = 53,640.58 : x
  2. Step 2: Convert to fraction form
    83,774.10/115,635.20 = 53,640.58/x
  3. Step 3: Cross multiply
    83,774.10x = 115,635.20 × 53,640.58
  4. Step 4: Simplify right side
    83,774.10x = 6,202,739,196.42
  5. Step 5: Solve for x
    x = 6,202,739,196.42/83,774.10
  6. Step 6: Final answer
    x = 74,041.25

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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.