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Finding the Fourth Proportional to 64,977.91, 89,674.73 and 51,659.08

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Solution

The fourth proportional to 64,977.91, 89,674.73 and 51,659.08 is: 71,293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.91 : 89,674.73 = 51,659.08 : x
  2. Step 2: Convert to fraction form
    64,977.91/89,674.73 = 51,659.08/x
  3. Step 3: Cross multiply
    64,977.91x = 89,674.73 × 51,659.08
  4. Step 4: Simplify right side
    64,977.91x = 4,632,514,051.05
  5. Step 5: Solve for x
    x = 4,632,514,051.05/64,977.91
  6. Step 6: Final answer
    x = 71,293.68

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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.