Home / 68,938.14-103,407.21-19,690.14

Finding the Fourth Proportional to 68,938.14, 103,407.21 and 19,690.14

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Solution

The fourth proportional to 68,938.14, 103,407.21 and 19,690.14 is: 29,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,938.14 : 103,407.21 = 19,690.14 : x
  2. Step 2: Convert to fraction form
    68,938.14/103,407.21 = 19,690.14/x
  3. Step 3: Cross multiply
    68,938.14x = 103,407.21 × 19,690.14
  4. Step 4: Simplify right side
    68,938.14x = 2,036,102,441.91
  5. Step 5: Solve for x
    x = 2,036,102,441.91/68,938.14
  6. Step 6: Final answer
    x = 29,535.21

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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.