Home / 75,142.12-103,696.26-40,687.24

Finding the Fourth Proportional to 75,142.12, 103,696.26 and 40,687.24

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Solution

The fourth proportional to 75,142.12, 103,696.26 and 40,687.24 is: 56,148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,142.12 : 103,696.26 = 40,687.24 : x
  2. Step 2: Convert to fraction form
    75,142.12/103,696.26 = 40,687.24/x
  3. Step 3: Cross multiply
    75,142.12x = 103,696.26 × 40,687.24
  4. Step 4: Simplify right side
    75,142.12x = 4,219,114,617.72
  5. Step 5: Solve for x
    x = 4,219,114,617.72/75,142.12
  6. Step 6: Final answer
    x = 56,148.46

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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.