Home / 65,861.53-90,891.12-40,362.98

Finding the Fourth Proportional to 65,861.53, 90,891.12 and 40,362.98

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Solution

The fourth proportional to 65,861.53, 90,891.12 and 40,362.98 is: 55,702.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,861.53 : 90,891.12 = 40,362.98 : x
  2. Step 2: Convert to fraction form
    65,861.53/90,891.12 = 40,362.98/x
  3. Step 3: Cross multiply
    65,861.53x = 90,891.12 × 40,362.98
  4. Step 4: Simplify right side
    65,861.53x = 3,668,636,042.12
  5. Step 5: Solve for x
    x = 3,668,636,042.12/65,861.53
  6. Step 6: Final answer
    x = 55,702.26

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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.