Home / 74,971.17-112,401.20-45,382.01

Finding the Fourth Proportional to 74,971.17, 112,401.20 and 45,382.01

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Solution

The fourth proportional to 74,971.17, 112,401.20 and 45,382.01 is: 68,039.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,971.17 : 112,401.20 = 45,382.01 : x
  2. Step 2: Convert to fraction form
    74,971.17/112,401.20 = 45,382.01/x
  3. Step 3: Cross multiply
    74,971.17x = 112,401.20 × 45,382.01
  4. Step 4: Simplify right side
    74,971.17x = 5,100,991,933.86
  5. Step 5: Solve for x
    x = 5,100,991,933.86/74,971.17
  6. Step 6: Final answer
    x = 68,039.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.