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Finding the Fourth Proportional to 91,663.81, 126,495.66 and 51,377.58

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Solution

The fourth proportional to 91,663.81, 126,495.66 and 51,377.58 is: 70,900.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,663.81 : 126,495.66 = 51,377.58 : x
  2. Step 2: Convert to fraction form
    91,663.81/126,495.66 = 51,377.58/x
  3. Step 3: Cross multiply
    91,663.81x = 126,495.66 × 51,377.58
  4. Step 4: Simplify right side
    91,663.81x = 6,499,040,891.30
  5. Step 5: Solve for x
    x = 6,499,040,891.30/91,663.81
  6. Step 6: Final answer
    x = 70,900.84

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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.