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Finding the Fourth Proportional to 77,908.11, 107,524.71 and 57,736.68

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Solution

The fourth proportional to 77,908.11, 107,524.71 and 57,736.68 is: 79,685.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,908.11 : 107,524.71 = 57,736.68 : x
  2. Step 2: Convert to fraction form
    77,908.11/107,524.71 = 57,736.68/x
  3. Step 3: Cross multiply
    77,908.11x = 107,524.71 × 57,736.68
  4. Step 4: Simplify right side
    77,908.11x = 6,208,119,773.36
  5. Step 5: Solve for x
    x = 6,208,119,773.36/77,908.11
  6. Step 6: Final answer
    x = 79,685.15

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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.