Home / 72,136.71-99,546.75-40,305.87

Finding the Fourth Proportional to 72,136.71, 99,546.75 and 40,305.87

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Solution

The fourth proportional to 72,136.71, 99,546.75 and 40,305.87 is: 55,621.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,136.71 : 99,546.75 = 40,305.87 : x
  2. Step 2: Convert to fraction form
    72,136.71/99,546.75 = 40,305.87/x
  3. Step 3: Cross multiply
    72,136.71x = 99,546.75 × 40,305.87
  4. Step 4: Simplify right side
    72,136.71x = 4,012,318,364.42
  5. Step 5: Solve for x
    x = 4,012,318,364.42/72,136.71
  6. Step 6: Final answer
    x = 55,621.03

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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.