Home / 74,812.24-112,121.44-30,387.04

Finding the Fourth Proportional to 74,812.24, 112,121.44 and 30,387.04

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Solution

The fourth proportional to 74,812.24, 112,121.44 and 30,387.04 is: 45,541.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,812.24 : 112,121.44 = 30,387.04 : x
  2. Step 2: Convert to fraction form
    74,812.24/112,121.44 = 30,387.04/x
  3. Step 3: Cross multiply
    74,812.24x = 112,121.44 × 30,387.04
  4. Step 4: Simplify right side
    74,812.24x = 3,407,038,682.14
  5. Step 5: Solve for x
    x = 3,407,038,682.14/74,812.24
  6. Step 6: Final answer
    x = 45,541.19

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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.