Home / 66,172.36-99,248.08-54,999.43

Finding the Fourth Proportional to 66,172.36, 99,248.08 and 54,999.43

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Solution

The fourth proportional to 66,172.36, 99,248.08 and 54,999.43 is: 82,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.36 : 99,248.08 = 54,999.43 : x
  2. Step 2: Convert to fraction form
    66,172.36/99,248.08 = 54,999.43/x
  3. Step 3: Cross multiply
    66,172.36x = 99,248.08 × 54,999.43
  4. Step 4: Simplify right side
    66,172.36x = 5,458,587,828.59
  5. Step 5: Solve for x
    x = 5,458,587,828.59/66,172.36
  6. Step 6: Final answer
    x = 82,490.45

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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.