Home / 66,301.72-99,461.75-21,324.35

Finding the Fourth Proportional to 66,301.72, 99,461.75 and 21,324.35

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Solution

The fourth proportional to 66,301.72, 99,461.75 and 21,324.35 is: 31,989.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,301.72 : 99,461.75 = 21,324.35 : x
  2. Step 2: Convert to fraction form
    66,301.72/99,461.75 = 21,324.35/x
  3. Step 3: Cross multiply
    66,301.72x = 99,461.75 × 21,324.35
  4. Step 4: Simplify right side
    66,301.72x = 2,120,957,430.59
  5. Step 5: Solve for x
    x = 2,120,957,430.59/66,301.72
  6. Step 6: Final answer
    x = 31,989.48

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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.