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Finding the Fourth Proportional to 86,811.72, 119,800.74 and 50,534.76

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Solution

The fourth proportional to 86,811.72, 119,800.74 and 50,534.76 is: 69,738.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,811.72 : 119,800.74 = 50,534.76 : x
  2. Step 2: Convert to fraction form
    86,811.72/119,800.74 = 50,534.76/x
  3. Step 3: Cross multiply
    86,811.72x = 119,800.74 × 50,534.76
  4. Step 4: Simplify right side
    86,811.72x = 6,054,101,643.72
  5. Step 5: Solve for x
    x = 6,054,101,643.72/86,811.72
  6. Step 6: Final answer
    x = 69,738.30

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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.