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Finding the Fourth Proportional to 77,711.37, 107,245.63 and 45,879.59

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Solution

The fourth proportional to 77,711.37, 107,245.63 and 45,879.59 is: 63,316.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,711.37 : 107,245.63 = 45,879.59 : x
  2. Step 2: Convert to fraction form
    77,711.37/107,245.63 = 45,879.59/x
  3. Step 3: Cross multiply
    77,711.37x = 107,245.63 × 45,879.59
  4. Step 4: Simplify right side
    77,711.37x = 4,920,384,997.46
  5. Step 5: Solve for x
    x = 4,920,384,997.46/77,711.37
  6. Step 6: Final answer
    x = 63,316.15

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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.