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Finding the Fourth Proportional to 77,620.77, 107,054.01 and 52,119.45

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Solution

The fourth proportional to 77,620.77, 107,054.01 and 52,119.45 is: 71,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,620.77 : 107,054.01 = 52,119.45 : x
  2. Step 2: Convert to fraction form
    77,620.77/107,054.01 = 52,119.45/x
  3. Step 3: Cross multiply
    77,620.77x = 107,054.01 × 52,119.45
  4. Step 4: Simplify right side
    77,620.77x = 5,579,596,121.49
  5. Step 5: Solve for x
    x = 5,579,596,121.49/77,620.77
  6. Step 6: Final answer
    x = 71,882.77

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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.