Home / 66,272.62-91,490.10-51,131.26

Finding the Fourth Proportional to 66,272.62, 91,490.10 and 51,131.26

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Solution

The fourth proportional to 66,272.62, 91,490.10 and 51,131.26 is: 70,587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,272.62 : 91,490.10 = 51,131.26 : x
  2. Step 2: Convert to fraction form
    66,272.62/91,490.10 = 51,131.26/x
  3. Step 3: Cross multiply
    66,272.62x = 91,490.10 × 51,131.26
  4. Step 4: Simplify right side
    66,272.62x = 4,678,004,090.53
  5. Step 5: Solve for x
    x = 4,678,004,090.53/66,272.62
  6. Step 6: Final answer
    x = 70,587.28

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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.