Home / 85,725.14-128,525.40-35,819.52

Finding the Fourth Proportional to 85,725.14, 128,525.40 and 35,819.52

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Solution

The fourth proportional to 85,725.14, 128,525.40 and 35,819.52 is: 53,703.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,725.14 : 128,525.40 = 35,819.52 : x
  2. Step 2: Convert to fraction form
    85,725.14/128,525.40 = 35,819.52/x
  3. Step 3: Cross multiply
    85,725.14x = 128,525.40 × 35,819.52
  4. Step 4: Simplify right side
    85,725.14x = 4,603,717,653.84
  5. Step 5: Solve for x
    x = 4,603,717,653.84/85,725.14
  6. Step 6: Final answer
    x = 53,703.24

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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.