Home / 66,058.48-91,146.36-39,209.86

Finding the Fourth Proportional to 66,058.48, 91,146.36 and 39,209.86

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Solution

The fourth proportional to 66,058.48, 91,146.36 and 39,209.86 is: 54,101.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,058.48 : 91,146.36 = 39,209.86 : x
  2. Step 2: Convert to fraction form
    66,058.48/91,146.36 = 39,209.86/x
  3. Step 3: Cross multiply
    66,058.48x = 91,146.36 × 39,209.86
  4. Step 4: Simplify right side
    66,058.48x = 3,573,836,015.11
  5. Step 5: Solve for x
    x = 3,573,836,015.11/66,058.48
  6. Step 6: Final answer
    x = 54,101.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.