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Finding the Fourth Proportional to 85,208.80, 127,832.40 and 50,130.40

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Solution

The fourth proportional to 85,208.80, 127,832.40 and 50,130.40 is: 75,206.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,208.80 : 127,832.40 = 50,130.40 : x
  2. Step 2: Convert to fraction form
    85,208.80/127,832.40 = 50,130.40/x
  3. Step 3: Cross multiply
    85,208.80x = 127,832.40 × 50,130.40
  4. Step 4: Simplify right side
    85,208.80x = 6,408,289,344.96
  5. Step 5: Solve for x
    x = 6,408,289,344.96/85,208.80
  6. Step 6: Final answer
    x = 75,206.90

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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.