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Finding the Fourth Proportional to 71,468.42, 107,210.95 and 27,128.34

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Solution

The fourth proportional to 71,468.42, 107,210.95 and 27,128.34 is: 40,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,468.42 : 107,210.95 = 27,128.34 : x
  2. Step 2: Convert to fraction form
    71,468.42/107,210.95 = 27,128.34/x
  3. Step 3: Cross multiply
    71,468.42x = 107,210.95 × 27,128.34
  4. Step 4: Simplify right side
    71,468.42x = 2,908,455,103.32
  5. Step 5: Solve for x
    x = 2,908,455,103.32/71,468.42
  6. Step 6: Final answer
    x = 40,695.67

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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.