Home / 85,918.06-128,895.60-25,941.55

Finding the Fourth Proportional to 85,918.06, 128,895.60 and 25,941.55

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Solution

The fourth proportional to 85,918.06, 128,895.60 and 25,941.55 is: 38,917.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,918.06 : 128,895.60 = 25,941.55 : x
  2. Step 2: Convert to fraction form
    85,918.06/128,895.60 = 25,941.55/x
  3. Step 3: Cross multiply
    85,918.06x = 128,895.60 × 25,941.55
  4. Step 4: Simplify right side
    85,918.06x = 3,343,751,652.18
  5. Step 5: Solve for x
    x = 3,343,751,652.18/85,918.06
  6. Step 6: Final answer
    x = 38,917.91

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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.