Home / 74,121.90-102,288.29-40,130.41

Finding the Fourth Proportional to 74,121.90, 102,288.29 and 40,130.41

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Solution

The fourth proportional to 74,121.90, 102,288.29 and 40,130.41 is: 55,380.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,121.90 : 102,288.29 = 40,130.41 : x
  2. Step 2: Convert to fraction form
    74,121.90/102,288.29 = 40,130.41/x
  3. Step 3: Cross multiply
    74,121.90x = 102,288.29 × 40,130.41
  4. Step 4: Simplify right side
    74,121.90x = 4,104,871,015.90
  5. Step 5: Solve for x
    x = 4,104,871,015.90/74,121.90
  6. Step 6: Final answer
    x = 55,380.00

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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.