Home / 56,405.16-84,518.74-20,817.51

Finding the Fourth Proportional to 56,405.16, 84,518.74 and 20,817.51

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Solution

The fourth proportional to 56,405.16, 84,518.74 and 20,817.51 is: 31,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,405.16 : 84,518.74 = 20,817.51 : x
  2. Step 2: Convert to fraction form
    56,405.16/84,518.74 = 20,817.51/x
  3. Step 3: Cross multiply
    56,405.16x = 84,518.74 × 20,817.51
  4. Step 4: Simplify right side
    56,405.16x = 1,759,469,663.09
  5. Step 5: Solve for x
    x = 1,759,469,663.09/56,405.16
  6. Step 6: Final answer
    x = 31,193.42

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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.