Home / 66,542.01-99,763.80-31,440.66

Finding the Fourth Proportional to 66,542.01, 99,763.80 and 31,440.66

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Solution

The fourth proportional to 66,542.01, 99,763.80 and 31,440.66 is: 47,137.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,542.01 : 99,763.80 = 31,440.66 : x
  2. Step 2: Convert to fraction form
    66,542.01/99,763.80 = 31,440.66/x
  3. Step 3: Cross multiply
    66,542.01x = 99,763.80 × 31,440.66
  4. Step 4: Simplify right side
    66,542.01x = 3,136,639,400.94
  5. Step 5: Solve for x
    x = 3,136,639,400.94/66,542.01
  6. Step 6: Final answer
    x = 47,137.73

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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.