Home / 74,563.12-102,899.53-42,738.02

Finding the Fourth Proportional to 74,563.12, 102,899.53 and 42,738.02

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Solution

The fourth proportional to 74,563.12, 102,899.53 and 42,738.02 is: 58,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,563.12 : 102,899.53 = 42,738.02 : x
  2. Step 2: Convert to fraction form
    74,563.12/102,899.53 = 42,738.02/x
  3. Step 3: Cross multiply
    74,563.12x = 102,899.53 × 42,738.02
  4. Step 4: Simplify right side
    74,563.12x = 4,397,722,171.13
  5. Step 5: Solve for x
    x = 4,397,722,171.13/74,563.12
  6. Step 6: Final answer
    x = 58,979.86

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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.