Home / 90,686.10-136,076.40-43,354.56

Finding the Fourth Proportional to 90,686.10, 136,076.40 and 43,354.56

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Solution

The fourth proportional to 90,686.10, 136,076.40 and 43,354.56 is: 65,054.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,686.10 : 136,076.40 = 43,354.56 : x
  2. Step 2: Convert to fraction form
    90,686.10/136,076.40 = 43,354.56/x
  3. Step 3: Cross multiply
    90,686.10x = 136,076.40 × 43,354.56
  4. Step 4: Simplify right side
    90,686.10x = 5,899,532,448.38
  5. Step 5: Solve for x
    x = 5,899,532,448.38/90,686.10
  6. Step 6: Final answer
    x = 65,054.43

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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.