Home / 66,085.20-99,138.16-21,701.86

Finding the Fourth Proportional to 66,085.20, 99,138.16 and 21,701.86

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Solution

The fourth proportional to 66,085.20, 99,138.16 and 21,701.86 is: 32,556.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,085.20 : 99,138.16 = 21,701.86 : x
  2. Step 2: Convert to fraction form
    66,085.20/99,138.16 = 21,701.86/x
  3. Step 3: Cross multiply
    66,085.20x = 99,138.16 × 21,701.86
  4. Step 4: Simplify right side
    66,085.20x = 2,151,482,248.26
  5. Step 5: Solve for x
    x = 2,151,482,248.26/66,085.20
  6. Step 6: Final answer
    x = 32,556.19

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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.