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Finding the Fourth Proportional to 85,358.64, 128,022.48 and 23,014.56

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Solution

The fourth proportional to 85,358.64, 128,022.48 and 23,014.56 is: 34,517.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,358.64 : 128,022.48 = 23,014.56 : x
  2. Step 2: Convert to fraction form
    85,358.64/128,022.48 = 23,014.56/x
  3. Step 3: Cross multiply
    85,358.64x = 128,022.48 × 23,014.56
  4. Step 4: Simplify right side
    85,358.64x = 2,946,381,047.31
  5. Step 5: Solve for x
    x = 2,946,381,047.31/85,358.64
  6. Step 6: Final answer
    x = 34,517.67

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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.