Home / 85,621.05-128,437.73-26,461.33

Finding the Fourth Proportional to 85,621.05, 128,437.73 and 26,461.33

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Solution

The fourth proportional to 85,621.05, 128,437.73 and 26,461.33 is: 39,693.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,621.05 : 128,437.73 = 26,461.33 : x
  2. Step 2: Convert to fraction form
    85,621.05/128,437.73 = 26,461.33/x
  3. Step 3: Cross multiply
    85,621.05x = 128,437.73 × 26,461.33
  4. Step 4: Simplify right side
    85,621.05x = 3,398,633,451.85
  5. Step 5: Solve for x
    x = 3,398,633,451.85/85,621.05
  6. Step 6: Final answer
    x = 39,693.90

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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.