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Finding the Fourth Proportional to 170,427.52, 255,621.12 and 45,758.72

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Solution

The fourth proportional to 170,427.52, 255,621.12 and 45,758.72 is: 68,632.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,427.52 : 255,621.12 = 45,758.72 : x
  2. Step 2: Convert to fraction form
    170,427.52/255,621.12 = 45,758.72/x
  3. Step 3: Cross multiply
    170,427.52x = 255,621.12 × 45,758.72
  4. Step 4: Simplify right side
    170,427.52x = 11,696,895,256.17
  5. Step 5: Solve for x
    x = 11,696,895,256.17/170,427.52
  6. Step 6: Final answer
    x = 68,632.67

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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.