Home / 66,110.19-99,172.34-21,115.83

Finding the Fourth Proportional to 66,110.19, 99,172.34 and 21,115.83

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Solution

The fourth proportional to 66,110.19, 99,172.34 and 21,115.83 is: 31,676.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,110.19 : 99,172.34 = 21,115.83 : x
  2. Step 2: Convert to fraction form
    66,110.19/99,172.34 = 21,115.83/x
  3. Step 3: Cross multiply
    66,110.19x = 99,172.34 × 21,115.83
  4. Step 4: Simplify right side
    66,110.19x = 2,094,106,272.14
  5. Step 5: Solve for x
    x = 2,094,106,272.14/66,110.19
  6. Step 6: Final answer
    x = 31,676.00

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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.