Home / 56,081.13-84,090.18-18,621.15

Finding the Fourth Proportional to 56,081.13, 84,090.18 and 18,621.15

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Solution

The fourth proportional to 56,081.13, 84,090.18 and 18,621.15 is: 27,921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,081.13 : 84,090.18 = 18,621.15 : x
  2. Step 2: Convert to fraction form
    56,081.13/84,090.18 = 18,621.15/x
  3. Step 3: Cross multiply
    56,081.13x = 84,090.18 × 18,621.15
  4. Step 4: Simplify right side
    56,081.13x = 1,565,855,855.31
  5. Step 5: Solve for x
    x = 1,565,855,855.31/56,081.13
  6. Step 6: Final answer
    x = 27,921.26

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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.