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Finding the Fourth Proportional to 85,519.87, 128,303.31 and 35,623.33

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Solution

The fourth proportional to 85,519.87, 128,303.31 and 35,623.33 is: 53,444.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,519.87 : 128,303.31 = 35,623.33 : x
  2. Step 2: Convert to fraction form
    85,519.87/128,303.31 = 35,623.33/x
  3. Step 3: Cross multiply
    85,519.87x = 128,303.31 × 35,623.33
  4. Step 4: Simplify right side
    85,519.87x = 4,570,591,152.22
  5. Step 5: Solve for x
    x = 4,570,591,152.22/85,519.87
  6. Step 6: Final answer
    x = 53,444.79

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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.