Home / 85,451.72-128,177.89-26,286.98

Finding the Fourth Proportional to 85,451.72, 128,177.89 and 26,286.98

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Solution

The fourth proportional to 85,451.72, 128,177.89 and 26,286.98 is: 39,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,451.72 : 128,177.89 = 26,286.98 : x
  2. Step 2: Convert to fraction form
    85,451.72/128,177.89 = 26,286.98/x
  3. Step 3: Cross multiply
    85,451.72x = 128,177.89 × 26,286.98
  4. Step 4: Simplify right side
    85,451.72x = 3,369,408,924.27
  5. Step 5: Solve for x
    x = 3,369,408,924.27/85,451.72
  6. Step 6: Final answer
    x = 39,430.56

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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.