Home / 85,663,469.16-128,496,860.70-20,967,828.84

Finding the Fourth Proportional to 85,663,469.16, 128,496,860.70 and 20,967,828.84

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Solution

The fourth proportional to 85,663,469.16, 128,496,860.70 and 20,967,828.84 is: 31,452,148.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,663,469.16 : 128,496,860.70 = 20,967,828.84 : x
  2. Step 2: Convert to fraction form
    85,663,469.16/128,496,860.70 = 20,967,828.84/x
  3. Step 3: Cross multiply
    85,663,469.16x = 128,496,860.70 × 20,967,828.84
  4. Step 4: Simplify right side
    85,663,469.16x = 2,694,300,181,634,922.50
  5. Step 5: Solve for x
    x = 2,694,300,181,634,922.50/85,663,469.16
  6. Step 6: Final answer
    x = 31,452,148.83

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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.