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Finding the Fourth Proportional to 86,503.71, 119,376.68 and 50,703.87

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Solution

The fourth proportional to 86,503.71, 119,376.68 and 50,703.87 is: 69,972.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,503.71 : 119,376.68 = 50,703.87 : x
  2. Step 2: Convert to fraction form
    86,503.71/119,376.68 = 50,703.87/x
  3. Step 3: Cross multiply
    86,503.71x = 119,376.68 × 50,703.87
  4. Step 4: Simplify right side
    86,503.71x = 6,052,859,410.23
  5. Step 5: Solve for x
    x = 6,052,859,410.23/86,503.71
  6. Step 6: Final answer
    x = 69,972.25

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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.