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Finding the Fourth Proportional to 68,990.46, 103,485.42 and 19,070.46

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Solution

The fourth proportional to 68,990.46, 103,485.42 and 19,070.46 is: 28,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.46 : 103,485.42 = 19,070.46 : x
  2. Step 2: Convert to fraction form
    68,990.46/103,485.42 = 19,070.46/x
  3. Step 3: Cross multiply
    68,990.46x = 103,485.42 × 19,070.46
  4. Step 4: Simplify right side
    68,990.46x = 1,973,514,562.69
  5. Step 5: Solve for x
    x = 1,973,514,562.69/68,990.46
  6. Step 6: Final answer
    x = 28,605.62

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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.