Home / 55,814.20-83,721.30-18,878.20

Finding the Fourth Proportional to 55,814.20, 83,721.30 and 18,878.20

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Solution

The fourth proportional to 55,814.20, 83,721.30 and 18,878.20 is: 28,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,814.20 : 83,721.30 = 18,878.20 : x
  2. Step 2: Convert to fraction form
    55,814.20/83,721.30 = 18,878.20/x
  3. Step 3: Cross multiply
    55,814.20x = 83,721.30 × 18,878.20
  4. Step 4: Simplify right side
    55,814.20x = 1,580,507,445.66
  5. Step 5: Solve for x
    x = 1,580,507,445.66/55,814.20
  6. Step 6: Final answer
    x = 28,317.30

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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.