Home / 66,085.17-99,115.11-18,699.81

Finding the Fourth Proportional to 66,085.17, 99,115.11 and 18,699.81

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Solution

The fourth proportional to 66,085.17, 99,115.11 and 18,699.81 is: 28,046.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,085.17 : 99,115.11 = 18,699.81 : x
  2. Step 2: Convert to fraction form
    66,085.17/99,115.11 = 18,699.81/x
  3. Step 3: Cross multiply
    66,085.17x = 99,115.11 × 18,699.81
  4. Step 4: Simplify right side
    66,085.17x = 1,853,433,725.13
  5. Step 5: Solve for x
    x = 1,853,433,725.13/66,085.17
  6. Step 6: Final answer
    x = 28,046.14

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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.