Home / 76,723.74-105,914.79-66,475.62

Finding the Fourth Proportional to 76,723.74, 105,914.79 and 66,475.62

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Solution

The fourth proportional to 76,723.74, 105,914.79 and 66,475.62 is: 91,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,723.74 : 105,914.79 = 66,475.62 : x
  2. Step 2: Convert to fraction form
    76,723.74/105,914.79 = 66,475.62/x
  3. Step 3: Cross multiply
    76,723.74x = 105,914.79 × 66,475.62
  4. Step 4: Simplify right side
    76,723.74x = 7,040,751,332.42
  5. Step 5: Solve for x
    x = 7,040,751,332.42/76,723.74
  6. Step 6: Final answer
    x = 91,767.57

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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.