Home / 53,317.75-79,976.40-21,720.76

Finding the Fourth Proportional to 53,317.75, 79,976.40 and 21,720.76

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Solution

The fourth proportional to 53,317.75, 79,976.40 and 21,720.76 is: 32,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,317.75 : 79,976.40 = 21,720.76 : x
  2. Step 2: Convert to fraction form
    53,317.75/79,976.40 = 21,720.76/x
  3. Step 3: Cross multiply
    53,317.75x = 79,976.40 × 21,720.76
  4. Step 4: Simplify right side
    53,317.75x = 1,737,148,281.40
  5. Step 5: Solve for x
    x = 1,737,148,281.40/53,317.75
  6. Step 6: Final answer
    x = 32,581.05

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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.