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Finding the Fourth Proportional to 77,729.94, 107,265.96 and 45,901.80

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Solution

The fourth proportional to 77,729.94, 107,265.96 and 45,901.80 is: 63,343.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,729.94 : 107,265.96 = 45,901.80 : x
  2. Step 2: Convert to fraction form
    77,729.94/107,265.96 = 45,901.80/x
  3. Step 3: Cross multiply
    77,729.94x = 107,265.96 × 45,901.80
  4. Step 4: Simplify right side
    77,729.94x = 4,923,700,642.73
  5. Step 5: Solve for x
    x = 4,923,700,642.73/77,729.94
  6. Step 6: Final answer
    x = 63,343.68

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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.