Home / 85,932.24-128,898.12-26,771.28

Finding the Fourth Proportional to 85,932.24, 128,898.12 and 26,771.28

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Solution

The fourth proportional to 85,932.24, 128,898.12 and 26,771.28 is: 40,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,932.24 : 128,898.12 = 26,771.28 : x
  2. Step 2: Convert to fraction form
    85,932.24/128,898.12 = 26,771.28/x
  3. Step 3: Cross multiply
    85,932.24x = 128,898.12 × 26,771.28
  4. Step 4: Simplify right side
    85,932.24x = 3,450,767,661.99
  5. Step 5: Solve for x
    x = 3,450,767,661.99/85,932.24
  6. Step 6: Final answer
    x = 40,156.85

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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.