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Finding the Fourth Proportional to 77,656.80, 107,126.64 and 50,471.04

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Solution

The fourth proportional to 77,656.80, 107,126.64 and 50,471.04 is: 69,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,656.80 : 107,126.64 = 50,471.04 : x
  2. Step 2: Convert to fraction form
    77,656.80/107,126.64 = 50,471.04/x
  3. Step 3: Cross multiply
    77,656.80x = 107,126.64 × 50,471.04
  4. Step 4: Simplify right side
    77,656.80x = 5,406,792,932.51
  5. Step 5: Solve for x
    x = 5,406,792,932.51/77,656.80
  6. Step 6: Final answer
    x = 69,624.20

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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.