Home / 66,128.48-99,168.11-26,664.06

Finding the Fourth Proportional to 66,128.48, 99,168.11 and 26,664.06

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Solution

The fourth proportional to 66,128.48, 99,168.11 and 26,664.06 is: 39,986.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128.48 : 99,168.11 = 26,664.06 : x
  2. Step 2: Convert to fraction form
    66,128.48/99,168.11 = 26,664.06/x
  3. Step 3: Cross multiply
    66,128.48x = 99,168.11 × 26,664.06
  4. Step 4: Simplify right side
    66,128.48x = 2,644,224,435.13
  5. Step 5: Solve for x
    x = 2,644,224,435.13/66,128.48
  6. Step 6: Final answer
    x = 39,986.17

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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.