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Finding the Fourth Proportional to 65,622.80, 98,430.76 and 18,873.84

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Solution

The fourth proportional to 65,622.80, 98,430.76 and 18,873.84 is: 28,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,622.80 : 98,430.76 = 18,873.84 : x
  2. Step 2: Convert to fraction form
    65,622.80/98,430.76 = 18,873.84/x
  3. Step 3: Cross multiply
    65,622.80x = 98,430.76 × 18,873.84
  4. Step 4: Simplify right side
    65,622.80x = 1,857,766,415.32
  5. Step 5: Solve for x
    x = 1,857,766,415.32/65,622.80
  6. Step 6: Final answer
    x = 28,309.77

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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.