Home / 74,340.31-111,509.50-18,180.90

Finding the Fourth Proportional to 74,340.31, 111,509.50 and 18,180.90

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Solution

The fourth proportional to 74,340.31, 111,509.50 and 18,180.90 is: 27,271.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,340.31 : 111,509.50 = 18,180.90 : x
  2. Step 2: Convert to fraction form
    74,340.31/111,509.50 = 18,180.90/x
  3. Step 3: Cross multiply
    74,340.31x = 111,509.50 × 18,180.90
  4. Step 4: Simplify right side
    74,340.31x = 2,027,343,395.81
  5. Step 5: Solve for x
    x = 2,027,343,395.81/74,340.31
  6. Step 6: Final answer
    x = 27,271.12

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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.