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Finding the Fourth Proportional to 84,670.96, 127,023.18 and 28,508.80

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Solution

The fourth proportional to 84,670.96, 127,023.18 and 28,508.80 is: 42,768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,670.96 : 127,023.18 = 28,508.80 : x
  2. Step 2: Convert to fraction form
    84,670.96/127,023.18 = 28,508.80/x
  3. Step 3: Cross multiply
    84,670.96x = 127,023.18 × 28,508.80
  4. Step 4: Simplify right side
    84,670.96x = 3,621,278,433.98
  5. Step 5: Solve for x
    x = 3,621,278,433.98/84,670.96
  6. Step 6: Final answer
    x = 42,768.84

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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.