Home / 66,411.16-99,616.50-19,660.36

Finding the Fourth Proportional to 66,411.16, 99,616.50 and 19,660.36

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Solution

The fourth proportional to 66,411.16, 99,616.50 and 19,660.36 is: 29,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,411.16 : 99,616.50 = 19,660.36 : x
  2. Step 2: Convert to fraction form
    66,411.16/99,616.50 = 19,660.36/x
  3. Step 3: Cross multiply
    66,411.16x = 99,616.50 × 19,660.36
  4. Step 4: Simplify right side
    66,411.16x = 1,958,496,251.94
  5. Step 5: Solve for x
    x = 1,958,496,251.94/66,411.16
  6. Step 6: Final answer
    x = 29,490.47

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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.