Home / 64,930.08-89,605.44-39,765.36

Finding the Fourth Proportional to 64,930.08, 89,605.44 and 39,765.36

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Solution

The fourth proportional to 64,930.08, 89,605.44 and 39,765.36 is: 54,877.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,930.08 : 89,605.44 = 39,765.36 : x
  2. Step 2: Convert to fraction form
    64,930.08/89,605.44 = 39,765.36/x
  3. Step 3: Cross multiply
    64,930.08x = 89,605.44 × 39,765.36
  4. Step 4: Simplify right side
    64,930.08x = 3,563,192,579.56
  5. Step 5: Solve for x
    x = 3,563,192,579.56/64,930.08
  6. Step 6: Final answer
    x = 54,877.38

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1.5x scale

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.