Home / 51,136.64-76,705.51-17,856.78

Finding the Fourth Proportional to 51,136.64, 76,705.51 and 17,856.78

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Solution

The fourth proportional to 51,136.64, 76,705.51 and 17,856.78 is: 26,785.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,136.64 : 76,705.51 = 17,856.78 : x
  2. Step 2: Convert to fraction form
    51,136.64/76,705.51 = 17,856.78/x
  3. Step 3: Cross multiply
    51,136.64x = 76,705.51 × 17,856.78
  4. Step 4: Simplify right side
    51,136.64x = 1,369,713,416.86
  5. Step 5: Solve for x
    x = 1,369,713,416.86/51,136.64
  6. Step 6: Final answer
    x = 26,785.36

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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.