Home / 56,135.06-84,210.83-20,108.78

Finding the Fourth Proportional to 56,135.06, 84,210.83 and 20,108.78

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Solution

The fourth proportional to 56,135.06, 84,210.83 and 20,108.78 is: 30,166.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,135.06 : 84,210.83 = 20,108.78 : x
  2. Step 2: Convert to fraction form
    56,135.06/84,210.83 = 20,108.78/x
  3. Step 3: Cross multiply
    56,135.06x = 84,210.83 × 20,108.78
  4. Step 4: Simplify right side
    56,135.06x = 1,693,376,532.49
  5. Step 5: Solve for x
    x = 1,693,376,532.49/56,135.06
  6. Step 6: Final answer
    x = 30,166.12

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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.