Home / 85,917.06-128,894.10-25,940.55

Finding the Fourth Proportional to 85,917.06, 128,894.10 and 25,940.55

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Solution

The fourth proportional to 85,917.06, 128,894.10 and 25,940.55 is: 38,916.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,917.06 : 128,894.10 = 25,940.55 : x
  2. Step 2: Convert to fraction form
    85,917.06/128,894.10 = 25,940.55/x
  3. Step 3: Cross multiply
    85,917.06x = 128,894.10 × 25,940.55
  4. Step 4: Simplify right side
    85,917.06x = 3,343,583,845.76
  5. Step 5: Solve for x
    x = 3,343,583,845.76/85,917.06
  6. Step 6: Final answer
    x = 38,916.41

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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.