Home / 77,690.53-107,186.25-43,693.21

Finding the Fourth Proportional to 77,690.53, 107,186.25 and 43,693.21

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Solution

The fourth proportional to 77,690.53, 107,186.25 and 43,693.21 is: 60,281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,690.53 : 107,186.25 = 43,693.21 : x
  2. Step 2: Convert to fraction form
    77,690.53/107,186.25 = 43,693.21/x
  3. Step 3: Cross multiply
    77,690.53x = 107,186.25 × 43,693.21
  4. Step 4: Simplify right side
    77,690.53x = 4,683,311,330.36
  5. Step 5: Solve for x
    x = 4,683,311,330.36/77,690.53
  6. Step 6: Final answer
    x = 60,281.62

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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.