Home / 85,942.40-128,913.58-26,782.82

Finding the Fourth Proportional to 85,942.40, 128,913.58 and 26,782.82

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Solution

The fourth proportional to 85,942.40, 128,913.58 and 26,782.82 is: 40,174.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,942.40 : 128,913.58 = 26,782.82 : x
  2. Step 2: Convert to fraction form
    85,942.40/128,913.58 = 26,782.82/x
  3. Step 3: Cross multiply
    85,942.40x = 128,913.58 × 26,782.82
  4. Step 4: Simplify right side
    85,942.40x = 3,452,669,208.70
  5. Step 5: Solve for x
    x = 3,452,669,208.70/85,942.40
  6. Step 6: Final answer
    x = 40,174.22

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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.