Home / 66,731.69-92,080.62-39,868.49

Finding the Fourth Proportional to 66,731.69, 92,080.62 and 39,868.49

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Solution

The fourth proportional to 66,731.69, 92,080.62 and 39,868.49 is: 55,013.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.69 : 92,080.62 = 39,868.49 : x
  2. Step 2: Convert to fraction form
    66,731.69/92,080.62 = 39,868.49/x
  3. Step 3: Cross multiply
    66,731.69x = 92,080.62 × 39,868.49
  4. Step 4: Simplify right side
    66,731.69x = 3,671,114,817.26
  5. Step 5: Solve for x
    x = 3,671,114,817.26/66,731.69
  6. Step 6: Final answer
    x = 55,013.07

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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.