Home / 66,078.36-99,128.48-21,695.24

Finding the Fourth Proportional to 66,078.36, 99,128.48 and 21,695.24

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Solution

The fourth proportional to 66,078.36, 99,128.48 and 21,695.24 is: 32,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,078.36 : 99,128.48 = 21,695.24 : x
  2. Step 2: Convert to fraction form
    66,078.36/99,128.48 = 21,695.24/x
  3. Step 3: Cross multiply
    66,078.36x = 99,128.48 × 21,695.24
  4. Step 4: Simplify right side
    66,078.36x = 2,150,616,303.78
  5. Step 5: Solve for x
    x = 2,150,616,303.78/66,078.36
  6. Step 6: Final answer
    x = 32,546.45

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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.