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Finding the Fourth Proportional to 85,399.83, 128,104.43 and 35,484.98

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Solution

The fourth proportional to 85,399.83, 128,104.43 and 35,484.98 is: 53,229.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,399.83 : 128,104.43 = 35,484.98 : x
  2. Step 2: Convert to fraction form
    85,399.83/128,104.43 = 35,484.98/x
  3. Step 3: Cross multiply
    85,399.83x = 128,104.43 × 35,484.98
  4. Step 4: Simplify right side
    85,399.83x = 4,545,782,318.51
  5. Step 5: Solve for x
    x = 4,545,782,318.51/85,399.83
  6. Step 6: Final answer
    x = 53,229.41

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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.