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Finding the Fourth Proportional to 91,710.66, 126,583.20 and 55,920.39

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Solution

The fourth proportional to 91,710.66, 126,583.20 and 55,920.39 is: 77,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,710.66 : 126,583.20 = 55,920.39 : x
  2. Step 2: Convert to fraction form
    91,710.66/126,583.20 = 55,920.39/x
  3. Step 3: Cross multiply
    91,710.66x = 126,583.20 × 55,920.39
  4. Step 4: Simplify right side
    91,710.66x = 7,078,581,911.45
  5. Step 5: Solve for x
    x = 7,078,581,911.45/91,710.66
  6. Step 6: Final answer
    x = 77,183.85

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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.