Home / 85,772.12-128,651.70-23,447.48

Finding the Fourth Proportional to 85,772.12, 128,651.70 and 23,447.48

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Solution

The fourth proportional to 85,772.12, 128,651.70 and 23,447.48 is: 35,169.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,772.12 : 128,651.70 = 23,447.48 : x
  2. Step 2: Convert to fraction form
    85,772.12/128,651.70 = 23,447.48/x
  3. Step 3: Cross multiply
    85,772.12x = 128,651.70 × 23,447.48
  4. Step 4: Simplify right side
    85,772.12x = 3,016,558,162.72
  5. Step 5: Solve for x
    x = 3,016,558,162.72/85,772.12
  6. Step 6: Final answer
    x = 35,169.45

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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.