Home / 71,993.16-99,349.38-40,165.56

Finding the Fourth Proportional to 71,993.16, 99,349.38 and 40,165.56

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Solution

The fourth proportional to 71,993.16, 99,349.38 and 40,165.56 is: 55,427.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,993.16 : 99,349.38 = 40,165.56 : x
  2. Step 2: Convert to fraction form
    71,993.16/99,349.38 = 40,165.56/x
  3. Step 3: Cross multiply
    71,993.16x = 99,349.38 × 40,165.56
  4. Step 4: Simplify right side
    71,993.16x = 3,990,423,483.35
  5. Step 5: Solve for x
    x = 3,990,423,483.35/71,993.16
  6. Step 6: Final answer
    x = 55,427.81

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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.