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Finding the Fourth Proportional to 68,440.21, 102,642.49 and 28,977.01

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Solution

The fourth proportional to 68,440.21, 102,642.49 and 28,977.01 is: 43,457.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,440.21 : 102,642.49 = 28,977.01 : x
  2. Step 2: Convert to fraction form
    68,440.21/102,642.49 = 28,977.01/x
  3. Step 3: Cross multiply
    68,440.21x = 102,642.49 × 28,977.01
  4. Step 4: Simplify right side
    68,440.21x = 2,974,271,873.50
  5. Step 5: Solve for x
    x = 2,974,271,873.50/68,440.21
  6. Step 6: Final answer
    x = 43,457.96

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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.