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Finding the Fourth Proportional to 68,127.80, 102,191.70 and 30,730.10

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Solution

The fourth proportional to 68,127.80, 102,191.70 and 30,730.10 is: 46,095.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,127.80 : 102,191.70 = 30,730.10 : x
  2. Step 2: Convert to fraction form
    68,127.80/102,191.70 = 30,730.10/x
  3. Step 3: Cross multiply
    68,127.80x = 102,191.70 × 30,730.10
  4. Step 4: Simplify right side
    68,127.80x = 3,140,361,160.17
  5. Step 5: Solve for x
    x = 3,140,361,160.17/68,127.80
  6. Step 6: Final answer
    x = 46,095.15

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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.