Home / 56,091.76-84,115.77-21,012.28

Finding the Fourth Proportional to 56,091.76, 84,115.77 and 21,012.28

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Solution

The fourth proportional to 56,091.76, 84,115.77 and 21,012.28 is: 31,510.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,091.76 : 84,115.77 = 21,012.28 : x
  2. Step 2: Convert to fraction form
    56,091.76/84,115.77 = 21,012.28/x
  3. Step 3: Cross multiply
    56,091.76x = 84,115.77 × 21,012.28
  4. Step 4: Simplify right side
    56,091.76x = 1,767,464,111.66
  5. Step 5: Solve for x
    x = 1,767,464,111.66/56,091.76
  6. Step 6: Final answer
    x = 31,510.23

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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.