Home / 85,771.98-128,646.90-26,606.34

Finding the Fourth Proportional to 85,771.98, 128,646.90 and 26,606.34

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Solution

The fourth proportional to 85,771.98, 128,646.90 and 26,606.34 is: 39,906.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,771.98 : 128,646.90 = 26,606.34 : x
  2. Step 2: Convert to fraction form
    85,771.98/128,646.90 = 26,606.34/x
  3. Step 3: Cross multiply
    85,771.98x = 128,646.90 × 26,606.34
  4. Step 4: Simplify right side
    85,771.98x = 3,422,823,161.35
  5. Step 5: Solve for x
    x = 3,422,823,161.35/85,771.98
  6. Step 6: Final answer
    x = 39,906.08

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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.