Home / 64,654.12-89,224.46-39,155.10

Finding the Fourth Proportional to 64,654.12, 89,224.46 and 39,155.10

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Solution

The fourth proportional to 64,654.12, 89,224.46 and 39,155.10 is: 54,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,654.12 : 89,224.46 = 39,155.10 : x
  2. Step 2: Convert to fraction form
    64,654.12/89,224.46 = 39,155.10/x
  3. Step 3: Cross multiply
    64,654.12x = 89,224.46 × 39,155.10
  4. Step 4: Simplify right side
    64,654.12x = 3,493,592,653.75
  5. Step 5: Solve for x
    x = 3,493,592,653.75/64,654.12
  6. Step 6: Final answer
    x = 54,035.11

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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.