Home / 89,217.18-133,783.40-51,788.72

Finding the Fourth Proportional to 89,217.18, 133,783.40 and 51,788.72

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Solution

The fourth proportional to 89,217.18, 133,783.40 and 51,788.72 is: 77,658.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,217.18 : 133,783.40 = 51,788.72 : x
  2. Step 2: Convert to fraction form
    89,217.18/133,783.40 = 51,788.72/x
  3. Step 3: Cross multiply
    89,217.18x = 133,783.40 × 51,788.72
  4. Step 4: Simplify right side
    89,217.18x = 6,928,471,507.18
  5. Step 5: Solve for x
    x = 6,928,471,507.18/89,217.18
  6. Step 6: Final answer
    x = 77,658.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.