Home / 71,975.71-99,328.44-40,150.81

Finding the Fourth Proportional to 71,975.71, 99,328.44 and 40,150.81

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Solution

The fourth proportional to 71,975.71, 99,328.44 and 40,150.81 is: 55,409.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.71 : 99,328.44 = 40,150.81 : x
  2. Step 2: Convert to fraction form
    71,975.71/99,328.44 = 40,150.81/x
  3. Step 3: Cross multiply
    71,975.71x = 99,328.44 × 40,150.81
  4. Step 4: Simplify right side
    71,975.71x = 3,988,117,322.04
  5. Step 5: Solve for x
    x = 3,988,117,322.04/71,975.71
  6. Step 6: Final answer
    x = 55,409.21

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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.