Home / 85,928.58-128,860.47-50,878.26

Finding the Fourth Proportional to 85,928.58, 128,860.47 and 50,878.26

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Solution

The fourth proportional to 85,928.58, 128,860.47 and 50,878.26 is: 76,298.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,928.58 : 128,860.47 = 50,878.26 : x
  2. Step 2: Convert to fraction form
    85,928.58/128,860.47 = 50,878.26/x
  3. Step 3: Cross multiply
    85,928.58x = 128,860.47 × 50,878.26
  4. Step 4: Simplify right side
    85,928.58x = 6,556,196,496.38
  5. Step 5: Solve for x
    x = 6,556,196,496.38/85,928.58
  6. Step 6: Final answer
    x = 76,298.21

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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.