Home / 66,721.04-92,072.96-39,857.52

Finding the Fourth Proportional to 66,721.04, 92,072.96 and 39,857.52

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Solution

The fourth proportional to 66,721.04, 92,072.96 and 39,857.52 is: 55,002.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.04 : 92,072.96 = 39,857.52 : x
  2. Step 2: Convert to fraction form
    66,721.04/92,072.96 = 39,857.52/x
  3. Step 3: Cross multiply
    66,721.04x = 92,072.96 × 39,857.52
  4. Step 4: Simplify right side
    66,721.04x = 3,669,799,844.66
  5. Step 5: Solve for x
    x = 3,669,799,844.66/66,721.04
  6. Step 6: Final answer
    x = 55,002.14

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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.