Home / 66,085.64-99,115.86-18,700.34

Finding the Fourth Proportional to 66,085.64, 99,115.86 and 18,700.34

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Solution

The fourth proportional to 66,085.64, 99,115.86 and 18,700.34 is: 28,046.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,085.64 : 99,115.86 = 18,700.34 : x
  2. Step 2: Convert to fraction form
    66,085.64/99,115.86 = 18,700.34/x
  3. Step 3: Cross multiply
    66,085.64x = 99,115.86 × 18,700.34
  4. Step 4: Simplify right side
    66,085.64x = 1,853,500,281.39
  5. Step 5: Solve for x
    x = 1,853,500,281.39/66,085.64
  6. Step 6: Final answer
    x = 28,046.94

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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.