Home / 85,490.16-128,249.76-26,324.64

Finding the Fourth Proportional to 85,490.16, 128,249.76 and 26,324.64

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Solution

The fourth proportional to 85,490.16, 128,249.76 and 26,324.64 is: 39,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,490.16 : 128,249.76 = 26,324.64 : x
  2. Step 2: Convert to fraction form
    85,490.16/128,249.76 = 26,324.64/x
  3. Step 3: Cross multiply
    85,490.16x = 128,249.76 × 26,324.64
  4. Step 4: Simplify right side
    85,490.16x = 3,376,128,762.09
  5. Step 5: Solve for x
    x = 3,376,128,762.09/85,490.16
  6. Step 6: Final answer
    x = 39,491.43

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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.