Home / 85,799.60-128,716.56-29,641.76

Finding the Fourth Proportional to 85,799.60, 128,716.56 and 29,641.76

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Solution

The fourth proportional to 85,799.60, 128,716.56 and 29,641.76 is: 44,468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,799.60 : 128,716.56 = 29,641.76 : x
  2. Step 2: Convert to fraction form
    85,799.60/128,716.56 = 29,641.76/x
  3. Step 3: Cross multiply
    85,799.60x = 128,716.56 × 29,641.76
  4. Step 4: Simplify right side
    85,799.60x = 3,815,385,379.55
  5. Step 5: Solve for x
    x = 3,815,385,379.55/85,799.60
  6. Step 6: Final answer
    x = 44,468.57

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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.