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Finding the Fourth Proportional to 68,084.85, 102,127.22 and 20,700.32

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Solution

The fourth proportional to 68,084.85, 102,127.22 and 20,700.32 is: 31,050.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,084.85 : 102,127.22 = 20,700.32 : x
  2. Step 2: Convert to fraction form
    68,084.85/102,127.22 = 20,700.32/x
  3. Step 3: Cross multiply
    68,084.85x = 102,127.22 × 20,700.32
  4. Step 4: Simplify right side
    68,084.85x = 2,114,066,134.71
  5. Step 5: Solve for x
    x = 2,114,066,134.71/68,084.85
  6. Step 6: Final answer
    x = 31,050.46

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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.