Home / 65,782.03-98,685.21-20,814.70

Finding the Fourth Proportional to 65,782.03, 98,685.21 and 20,814.70

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Solution

The fourth proportional to 65,782.03, 98,685.21 and 20,814.70 is: 31,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,782.03 : 98,685.21 = 20,814.70 : x
  2. Step 2: Convert to fraction form
    65,782.03/98,685.21 = 20,814.70/x
  3. Step 3: Cross multiply
    65,782.03x = 98,685.21 × 20,814.70
  4. Step 4: Simplify right side
    65,782.03x = 2,054,103,040.59
  5. Step 5: Solve for x
    x = 2,054,103,040.59/65,782.03
  6. Step 6: Final answer
    x = 31,225.90

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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.