Home / 85,660.20-128,496.42-26,488.26

Finding the Fourth Proportional to 85,660.20, 128,496.42 and 26,488.26

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Solution

The fourth proportional to 85,660.20, 128,496.42 and 26,488.26 is: 39,734.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,660.20 : 128,496.42 = 26,488.26 : x
  2. Step 2: Convert to fraction form
    85,660.20/128,496.42 = 26,488.26/x
  3. Step 3: Cross multiply
    85,660.20x = 128,496.42 × 26,488.26
  4. Step 4: Simplify right side
    85,660.20x = 3,403,646,582.03
  5. Step 5: Solve for x
    x = 3,403,646,582.03/85,660.20
  6. Step 6: Final answer
    x = 39,734.28

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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.