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Finding the Fourth Proportional to 66,820.80, 92,212.80 and 37,012.80

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Solution

The fourth proportional to 66,820.80, 92,212.80 and 37,012.80 is: 51,077.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,820.80 : 92,212.80 = 37,012.80 : x
  2. Step 2: Convert to fraction form
    66,820.80/92,212.80 = 37,012.80/x
  3. Step 3: Cross multiply
    66,820.80x = 92,212.80 × 37,012.80
  4. Step 4: Simplify right side
    66,820.80x = 3,413,053,923.84
  5. Step 5: Solve for x
    x = 3,413,053,923.84/66,820.80
  6. Step 6: Final answer
    x = 51,077.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.