Home / 74,720.31-112,086.89-21,412.49

Finding the Fourth Proportional to 74,720.31, 112,086.89 and 21,412.49

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Solution

The fourth proportional to 74,720.31, 112,086.89 and 21,412.49 is: 32,120.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,720.31 : 112,086.89 = 21,412.49 : x
  2. Step 2: Convert to fraction form
    74,720.31/112,086.89 = 21,412.49/x
  3. Step 3: Cross multiply
    74,720.31x = 112,086.89 × 21,412.49
  4. Step 4: Simplify right side
    74,720.31x = 2,400,058,824.06
  5. Step 5: Solve for x
    x = 2,400,058,824.06/74,720.31
  6. Step 6: Final answer
    x = 32,120.57

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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.