Home / 85,527.23-128,311.70-60,275.96

Finding the Fourth Proportional to 85,527.23, 128,311.70 and 60,275.96

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Solution

The fourth proportional to 85,527.23, 128,311.70 and 60,275.96 is: 90,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,527.23 : 128,311.70 = 60,275.96 : x
  2. Step 2: Convert to fraction form
    85,527.23/128,311.70 = 60,275.96/x
  3. Step 3: Cross multiply
    85,527.23x = 128,311.70 × 60,275.96
  4. Step 4: Simplify right side
    85,527.23x = 7,734,110,896.73
  5. Step 5: Solve for x
    x = 7,734,110,896.73/85,527.23
  6. Step 6: Final answer
    x = 90,428.64

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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.