Home / 85,927.55-128,874.62-43,221.60

Finding the Fourth Proportional to 85,927.55, 128,874.62 and 43,221.60

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Solution

The fourth proportional to 85,927.55, 128,874.62 and 43,221.60 is: 64,824.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,927.55 : 128,874.62 = 43,221.60 : x
  2. Step 2: Convert to fraction form
    85,927.55/128,874.62 = 43,221.60/x
  3. Step 3: Cross multiply
    85,927.55x = 128,874.62 × 43,221.60
  4. Step 4: Simplify right side
    85,927.55x = 5,570,167,383.85
  5. Step 5: Solve for x
    x = 5,570,167,383.85/85,927.55
  6. Step 6: Final answer
    x = 64,824.00

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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.