Home / 81,381.42-112,299.08-45,563.81

Finding the Fourth Proportional to 81,381.42, 112,299.08 and 45,563.81

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Solution

The fourth proportional to 81,381.42, 112,299.08 and 45,563.81 is: 62,873.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,381.42 : 112,299.08 = 45,563.81 : x
  2. Step 2: Convert to fraction form
    81,381.42/112,299.08 = 45,563.81/x
  3. Step 3: Cross multiply
    81,381.42x = 112,299.08 × 45,563.81
  4. Step 4: Simplify right side
    81,381.42x = 5,116,773,154.98
  5. Step 5: Solve for x
    x = 5,116,773,154.98/81,381.42
  6. Step 6: Final answer
    x = 62,873.97

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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.