Home / 57,439.85-86,159.81-18,000.05

Finding the Fourth Proportional to 57,439.85, 86,159.81 and 18,000.05

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Solution

The fourth proportional to 57,439.85, 86,159.81 and 18,000.05 is: 27,000.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,439.85 : 86,159.81 = 18,000.05 : x
  2. Step 2: Convert to fraction form
    57,439.85/86,159.81 = 18,000.05/x
  3. Step 3: Cross multiply
    57,439.85x = 86,159.81 × 18,000.05
  4. Step 4: Simplify right side
    57,439.85x = 1,550,880,887.99
  5. Step 5: Solve for x
    x = 1,550,880,887.99/57,439.85
  6. Step 6: Final answer
    x = 27,000.09

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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.