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Finding the Fourth Proportional to 65,555.34, 98,336.70 and 18,807

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Solution

The fourth proportional to 65,555.34, 98,336.70 and 18,807 is: 28,211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,555.34 : 98,336.70 = 18,807 : x
  2. Step 2: Convert to fraction form
    65,555.34/98,336.70 = 18,807/x
  3. Step 3: Cross multiply
    65,555.34x = 98,336.70 × 18,807
  4. Step 4: Simplify right side
    65,555.34x = 1,849,418,316.90
  5. Step 5: Solve for x
    x = 1,849,418,316.90/65,555.34
  6. Step 6: Final answer
    x = 28,211.56

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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.