Home / 66,122.06-99,199.64-31,020.80

Finding the Fourth Proportional to 66,122.06, 99,199.64 and 31,020.80

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Solution

The fourth proportional to 66,122.06, 99,199.64 and 31,020.80 is: 46,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,122.06 : 99,199.64 = 31,020.80 : x
  2. Step 2: Convert to fraction form
    66,122.06/99,199.64 = 31,020.80/x
  3. Step 3: Cross multiply
    66,122.06x = 99,199.64 × 31,020.80
  4. Step 4: Simplify right side
    66,122.06x = 3,077,251,774.07
  5. Step 5: Solve for x
    x = 3,077,251,774.07/66,122.06
  6. Step 6: Final answer
    x = 46,538.96

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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.