Home / 74,720.21-103,109.81-42,887.03

Finding the Fourth Proportional to 74,720.21, 103,109.81 and 42,887.03

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Solution

The fourth proportional to 74,720.21, 103,109.81 and 42,887.03 is: 59,181.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,720.21 : 103,109.81 = 42,887.03 : x
  2. Step 2: Convert to fraction form
    74,720.21/103,109.81 = 42,887.03/x
  3. Step 3: Cross multiply
    74,720.21x = 103,109.81 × 42,887.03
  4. Step 4: Simplify right side
    74,720.21x = 4,422,072,784.78
  5. Step 5: Solve for x
    x = 4,422,072,784.78/74,720.21
  6. Step 6: Final answer
    x = 59,181.75

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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.