Home / 74,509.56-111,764.16-21,918.96

Finding the Fourth Proportional to 74,509.56, 111,764.16 and 21,918.96

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Solution

The fourth proportional to 74,509.56, 111,764.16 and 21,918.96 is: 32,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,509.56 : 111,764.16 = 21,918.96 : x
  2. Step 2: Convert to fraction form
    74,509.56/111,764.16 = 21,918.96/x
  3. Step 3: Cross multiply
    74,509.56x = 111,764.16 × 21,918.96
  4. Step 4: Simplify right side
    74,509.56x = 2,449,754,152.47
  5. Step 5: Solve for x
    x = 2,449,754,152.47/74,509.56
  6. Step 6: Final answer
    x = 32,878.39

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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.