Home / 77,856.96-107,436.12-43,854.60

Finding the Fourth Proportional to 77,856.96, 107,436.12 and 43,854.60

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Solution

The fourth proportional to 77,856.96, 107,436.12 and 43,854.60 is: 60,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,856.96 : 107,436.12 = 43,854.60 : x
  2. Step 2: Convert to fraction form
    77,856.96/107,436.12 = 43,854.60/x
  3. Step 3: Cross multiply
    77,856.96x = 107,436.12 × 43,854.60
  4. Step 4: Simplify right side
    77,856.96x = 4,711,568,068.15
  5. Step 5: Solve for x
    x = 4,711,568,068.15/77,856.96
  6. Step 6: Final answer
    x = 60,515.70

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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.