Home / 56,218.74-84,340.26-21,158.30

Finding the Fourth Proportional to 56,218.74, 84,340.26 and 21,158.30

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Solution

The fourth proportional to 56,218.74, 84,340.26 and 21,158.30 is: 31,742.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,218.74 : 84,340.26 = 21,158.30 : x
  2. Step 2: Convert to fraction form
    56,218.74/84,340.26 = 21,158.30/x
  3. Step 3: Cross multiply
    56,218.74x = 84,340.26 × 21,158.30
  4. Step 4: Simplify right side
    56,218.74x = 1,784,496,101.46
  5. Step 5: Solve for x
    x = 1,784,496,101.46/56,218.74
  6. Step 6: Final answer
    x = 31,742.02

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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.