Home / 56,081.16-84,109.86-21,023.40

Finding the Fourth Proportional to 56,081.16, 84,109.86 and 21,023.40

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Solution

The fourth proportional to 56,081.16, 84,109.86 and 21,023.40 is: 31,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,081.16 : 84,109.86 = 21,023.40 : x
  2. Step 2: Convert to fraction form
    56,081.16/84,109.86 = 21,023.40/x
  3. Step 3: Cross multiply
    56,081.16x = 84,109.86 × 21,023.40
  4. Step 4: Simplify right side
    56,081.16x = 1,768,275,230.72
  5. Step 5: Solve for x
    x = 1,768,275,230.72/56,081.16
  6. Step 6: Final answer
    x = 31,530.65

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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.