Home / 74,311.02-102,548.52-40,319.28

Finding the Fourth Proportional to 74,311.02, 102,548.52 and 40,319.28

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Solution

The fourth proportional to 74,311.02, 102,548.52 and 40,319.28 is: 55,640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,311.02 : 102,548.52 = 40,319.28 : x
  2. Step 2: Convert to fraction form
    74,311.02/102,548.52 = 40,319.28/x
  3. Step 3: Cross multiply
    74,311.02x = 102,548.52 × 40,319.28
  4. Step 4: Simplify right side
    74,311.02x = 4,134,682,491.47
  5. Step 5: Solve for x
    x = 4,134,682,491.47/74,311.02
  6. Step 6: Final answer
    x = 55,640.23

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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.