Home / 66,721.86-99,983.07-61,801.11

Finding the Fourth Proportional to 66,721.86, 99,983.07 and 61,801.11

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Solution

The fourth proportional to 66,721.86, 99,983.07 and 61,801.11 is: 92,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.86 : 99,983.07 = 61,801.11 : x
  2. Step 2: Convert to fraction form
    66,721.86/99,983.07 = 61,801.11/x
  3. Step 3: Cross multiply
    66,721.86x = 99,983.07 × 61,801.11
  4. Step 4: Simplify right side
    66,721.86x = 6,179,064,707.21
  5. Step 5: Solve for x
    x = 6,179,064,707.21/66,721.86
  6. Step 6: Final answer
    x = 92,609.30

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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.