Home / 85,815.63-128,634.08-28,847.25

Finding the Fourth Proportional to 85,815.63, 128,634.08 and 28,847.25

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Solution

The fourth proportional to 85,815.63, 128,634.08 and 28,847.25 is: 43,240.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,815.63 : 128,634.08 = 28,847.25 : x
  2. Step 2: Convert to fraction form
    85,815.63/128,634.08 = 28,847.25/x
  3. Step 3: Cross multiply
    85,815.63x = 128,634.08 × 28,847.25
  4. Step 4: Simplify right side
    85,815.63x = 3,710,739,320.04
  5. Step 5: Solve for x
    x = 3,710,739,320.04/85,815.63
  6. Step 6: Final answer
    x = 43,240.83

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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.