Home / 91,979.66-126,935.44-56,185.76

Finding the Fourth Proportional to 91,979.66, 126,935.44 and 56,185.76

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Solution

The fourth proportional to 91,979.66, 126,935.44 and 56,185.76 is: 77,538.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,979.66 : 126,935.44 = 56,185.76 : x
  2. Step 2: Convert to fraction form
    91,979.66/126,935.44 = 56,185.76/x
  3. Step 3: Cross multiply
    91,979.66x = 126,935.44 × 56,185.76
  4. Step 4: Simplify right side
    91,979.66x = 7,131,964,167.33
  5. Step 5: Solve for x
    x = 7,131,964,167.33/91,979.66
  6. Step 6: Final answer
    x = 77,538.49

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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.