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Finding the Fourth Proportional to 84,605.50, 126,910.29 and 28,446.34

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Solution

The fourth proportional to 84,605.50, 126,910.29 and 28,446.34 is: 42,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,605.50 : 126,910.29 = 28,446.34 : x
  2. Step 2: Convert to fraction form
    84,605.50/126,910.29 = 28,446.34/x
  3. Step 3: Cross multiply
    84,605.50x = 126,910.29 × 28,446.34
  4. Step 4: Simplify right side
    84,605.50x = 3,610,133,258.84
  5. Step 5: Solve for x
    x = 3,610,133,258.84/84,605.50
  6. Step 6: Final answer
    x = 42,670.20

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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.