Home / 71,989.26-99,352.08-40,161.12

Finding the Fourth Proportional to 71,989.26, 99,352.08 and 40,161.12

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Solution

The fourth proportional to 71,989.26, 99,352.08 and 40,161.12 is: 55,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,989.26 : 99,352.08 = 40,161.12 : x
  2. Step 2: Convert to fraction form
    71,989.26/99,352.08 = 40,161.12/x
  3. Step 3: Cross multiply
    71,989.26x = 99,352.08 × 40,161.12
  4. Step 4: Simplify right side
    71,989.26x = 3,990,090,807.13
  5. Step 5: Solve for x
    x = 3,990,090,807.13/71,989.26
  6. Step 6: Final answer
    x = 55,426.20

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1.5x scale

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.