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Finding the Fourth Proportional to 68,215.76, 102,337.48 and 21,457.76

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Solution

The fourth proportional to 68,215.76, 102,337.48 and 21,457.76 is: 32,190.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,215.76 : 102,337.48 = 21,457.76 : x
  2. Step 2: Convert to fraction form
    68,215.76/102,337.48 = 21,457.76/x
  3. Step 3: Cross multiply
    68,215.76x = 102,337.48 × 21,457.76
  4. Step 4: Simplify right side
    68,215.76x = 2,195,933,084.84
  5. Step 5: Solve for x
    x = 2,195,933,084.84/68,215.76
  6. Step 6: Final answer
    x = 32,190.99

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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.