Home / 83,905.11-125,903.79-39,530.70

Finding the Fourth Proportional to 83,905.11, 125,903.79 and 39,530.70

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Solution

The fourth proportional to 83,905.11, 125,903.79 and 39,530.70 is: 59,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,905.11 : 125,903.79 = 39,530.70 : x
  2. Step 2: Convert to fraction form
    83,905.11/125,903.79 = 39,530.70/x
  3. Step 3: Cross multiply
    83,905.11x = 125,903.79 × 39,530.70
  4. Step 4: Simplify right side
    83,905.11x = 4,977,064,951.35
  5. Step 5: Solve for x
    x = 4,977,064,951.35/83,905.11
  6. Step 6: Final answer
    x = 59,317.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.