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Finding the Fourth Proportional to 77,661.42, 107,172.21 and 44,127.42

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Solution

The fourth proportional to 77,661.42, 107,172.21 and 44,127.42 is: 60,895.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,661.42 : 107,172.21 = 44,127.42 : x
  2. Step 2: Convert to fraction form
    77,661.42/107,172.21 = 44,127.42/x
  3. Step 3: Cross multiply
    77,661.42x = 107,172.21 × 44,127.42
  4. Step 4: Simplify right side
    77,661.42x = 4,729,233,123.00
  5. Step 5: Solve for x
    x = 4,729,233,123.00/77,661.42
  6. Step 6: Final answer
    x = 60,895.53

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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.