Home / 85,845.58-128,765.58-25,874.38

Finding the Fourth Proportional to 85,845.58, 128,765.58 and 25,874.38

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Solution

The fourth proportional to 85,845.58, 128,765.58 and 25,874.38 is: 38,810.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,845.58 : 128,765.58 = 25,874.38 : x
  2. Step 2: Convert to fraction form
    85,845.58/128,765.58 = 25,874.38/x
  3. Step 3: Cross multiply
    85,845.58x = 128,765.58 × 25,874.38
  4. Step 4: Simplify right side
    85,845.58x = 3,331,729,547.84
  5. Step 5: Solve for x
    x = 3,331,729,547.84/85,845.58
  6. Step 6: Final answer
    x = 38,810.73

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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.