Home / 64,134.36-88,520.58-38,979

Finding the Fourth Proportional to 64,134.36, 88,520.58 and 38,979

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Solution

The fourth proportional to 64,134.36, 88,520.58 and 38,979 is: 53,800.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,134.36 : 88,520.58 = 38,979 : x
  2. Step 2: Convert to fraction form
    64,134.36/88,520.58 = 38,979/x
  3. Step 3: Cross multiply
    64,134.36x = 88,520.58 × 38,979
  4. Step 4: Simplify right side
    64,134.36x = 3,450,443,687.82
  5. Step 5: Solve for x
    x = 3,450,443,687.82/64,134.36
  6. Step 6: Final answer
    x = 53,800.24

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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.