Home / 85,021.20-127,526.40-28,861.20

Finding the Fourth Proportional to 85,021.20, 127,526.40 and 28,861.20

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Solution

The fourth proportional to 85,021.20, 127,526.40 and 28,861.20 is: 43,289.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,021.20 : 127,526.40 = 28,861.20 : x
  2. Step 2: Convert to fraction form
    85,021.20/127,526.40 = 28,861.20/x
  3. Step 3: Cross multiply
    85,021.20x = 127,526.40 × 28,861.20
  4. Step 4: Simplify right side
    85,021.20x = 3,680,564,935.68
  5. Step 5: Solve for x
    x = 3,680,564,935.68/85,021.20
  6. Step 6: Final answer
    x = 43,289.97

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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.