Home / 74,142.87-102,317.27-40,151.41

Finding the Fourth Proportional to 74,142.87, 102,317.27 and 40,151.41

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Solution

The fourth proportional to 74,142.87, 102,317.27 and 40,151.41 is: 55,409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,142.87 : 102,317.27 = 40,151.41 : x
  2. Step 2: Convert to fraction form
    74,142.87/102,317.27 = 40,151.41/x
  3. Step 3: Cross multiply
    74,142.87x = 102,317.27 × 40,151.41
  4. Step 4: Simplify right side
    74,142.87x = 4,108,182,776.84
  5. Step 5: Solve for x
    x = 4,108,182,776.84/74,142.87
  6. Step 6: Final answer
    x = 55,409.01

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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.