Home / 85,416.81-128,137.46-26,257.44

Finding the Fourth Proportional to 85,416.81, 128,137.46 and 26,257.44

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Solution

The fourth proportional to 85,416.81, 128,137.46 and 26,257.44 is: 39,389.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,416.81 : 128,137.46 = 26,257.44 : x
  2. Step 2: Convert to fraction form
    85,416.81/128,137.46 = 26,257.44/x
  3. Step 3: Cross multiply
    85,416.81x = 128,137.46 × 26,257.44
  4. Step 4: Simplify right side
    85,416.81x = 3,364,561,536.42
  5. Step 5: Solve for x
    x = 3,364,561,536.42/85,416.81
  6. Step 6: Final answer
    x = 39,389.92

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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.