Home / 85,855.22-128,781.47-23,525.72

Finding the Fourth Proportional to 85,855.22, 128,781.47 and 23,525.72

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Solution

The fourth proportional to 85,855.22, 128,781.47 and 23,525.72 is: 35,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,855.22 : 128,781.47 = 23,525.72 : x
  2. Step 2: Convert to fraction form
    85,855.22/128,781.47 = 23,525.72/x
  3. Step 3: Cross multiply
    85,855.22x = 128,781.47 × 23,525.72
  4. Step 4: Simplify right side
    85,855.22x = 3,029,677,008.73
  5. Step 5: Solve for x
    x = 3,029,677,008.73/85,855.22
  6. Step 6: Final answer
    x = 35,288.21

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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.