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Finding the Fourth Proportional to 68,528.40, 102,847.41 and 66,341.40

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Solution

The fourth proportional to 68,528.40, 102,847.41 and 66,341.40 is: 99,565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,528.40 : 102,847.41 = 66,341.40 : x
  2. Step 2: Convert to fraction form
    68,528.40/102,847.41 = 66,341.40/x
  3. Step 3: Cross multiply
    68,528.40x = 102,847.41 × 66,341.40
  4. Step 4: Simplify right side
    68,528.40x = 6,823,041,165.77
  5. Step 5: Solve for x
    x = 6,823,041,165.77/68,528.40
  6. Step 6: Final answer
    x = 99,565.16

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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.