Home / 64,977.92-89,514.24-61,815.68

Finding the Fourth Proportional to 64,977.92, 89,514.24 and 61,815.68

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Solution

The fourth proportional to 64,977.92, 89,514.24 and 61,815.68 is: 85,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.92 : 89,514.24 = 61,815.68 : x
  2. Step 2: Convert to fraction form
    64,977.92/89,514.24 = 61,815.68/x
  3. Step 3: Cross multiply
    64,977.92x = 89,514.24 × 61,815.68
  4. Step 4: Simplify right side
    64,977.92x = 5,533,383,615.28
  5. Step 5: Solve for x
    x = 5,533,383,615.28/64,977.92
  6. Step 6: Final answer
    x = 85,157.91

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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.