Home / 65,855.24-90,870.44-40,000.34

Finding the Fourth Proportional to 65,855.24, 90,870.44 and 40,000.34

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Solution

The fourth proportional to 65,855.24, 90,870.44 and 40,000.34 is: 55,194.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,855.24 : 90,870.44 = 40,000.34 : x
  2. Step 2: Convert to fraction form
    65,855.24/90,870.44 = 40,000.34/x
  3. Step 3: Cross multiply
    65,855.24x = 90,870.44 × 40,000.34
  4. Step 4: Simplify right side
    65,855.24x = 3,634,847,841.60
  5. Step 5: Solve for x
    x = 3,634,847,841.60/65,855.24
  6. Step 6: Final answer
    x = 55,194.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.