Home / 85,452.47-128,179.01-26,287.73

Finding the Fourth Proportional to 85,452.47, 128,179.01 and 26,287.73

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Solution

The fourth proportional to 85,452.47, 128,179.01 and 26,287.73 is: 39,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,452.47 : 128,179.01 = 26,287.73 : x
  2. Step 2: Convert to fraction form
    85,452.47/128,179.01 = 26,287.73/x
  3. Step 3: Cross multiply
    85,452.47x = 128,179.01 × 26,287.73
  4. Step 4: Simplify right side
    85,452.47x = 3,369,534,631.37
  5. Step 5: Solve for x
    x = 3,369,534,631.37/85,452.47
  6. Step 6: Final answer
    x = 39,431.68

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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.