Home / 74,029.66-111,051.58-20,721.72

Finding the Fourth Proportional to 74,029.66, 111,051.58 and 20,721.72

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Solution

The fourth proportional to 74,029.66, 111,051.58 and 20,721.72 is: 31,084.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,029.66 : 111,051.58 = 20,721.72 : x
  2. Step 2: Convert to fraction form
    74,029.66/111,051.58 = 20,721.72/x
  3. Step 3: Cross multiply
    74,029.66x = 111,051.58 × 20,721.72
  4. Step 4: Simplify right side
    74,029.66x = 2,301,179,746.32
  5. Step 5: Solve for x
    x = 2,301,179,746.32/74,029.66
  6. Step 6: Final answer
    x = 31,084.56

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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.