Home / 90,721.64-136,082.64-27,542.28

Finding the Fourth Proportional to 90,721.64, 136,082.64 and 27,542.28

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Solution

The fourth proportional to 90,721.64, 136,082.64 and 27,542.28 is: 41,313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,721.64 : 136,082.64 = 27,542.28 : x
  2. Step 2: Convert to fraction form
    90,721.64/136,082.64 = 27,542.28/x
  3. Step 3: Cross multiply
    90,721.64x = 136,082.64 × 27,542.28
  4. Step 4: Simplify right side
    90,721.64x = 3,748,026,174.02
  5. Step 5: Solve for x
    x = 3,748,026,174.02/90,721.64
  6. Step 6: Final answer
    x = 41,313.47

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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.