Home / 86,579.05-129,905.03-47,164.45

Finding the Fourth Proportional to 86,579.05, 129,905.03 and 47,164.45

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Solution

The fourth proportional to 86,579.05, 129,905.03 and 47,164.45 is: 70,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,579.05 : 129,905.03 = 47,164.45 : x
  2. Step 2: Convert to fraction form
    86,579.05/129,905.03 = 47,164.45/x
  3. Step 3: Cross multiply
    86,579.05x = 129,905.03 × 47,164.45
  4. Step 4: Simplify right side
    86,579.05x = 6,126,899,056.36
  5. Step 5: Solve for x
    x = 6,126,899,056.36/86,579.05
  6. Step 6: Final answer
    x = 70,766.53

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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.