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Finding the Fourth Proportional to 65,730.80, 98,628.60 and 26,289.20

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Solution

The fourth proportional to 65,730.80, 98,628.60 and 26,289.20 is: 39,446.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,730.80 : 98,628.60 = 26,289.20 : x
  2. Step 2: Convert to fraction form
    65,730.80/98,628.60 = 26,289.20/x
  3. Step 3: Cross multiply
    65,730.80x = 98,628.60 × 26,289.20
  4. Step 4: Simplify right side
    65,730.80x = 2,592,866,991.12
  5. Step 5: Solve for x
    x = 2,592,866,991.12/65,730.80
  6. Step 6: Final answer
    x = 39,446.76

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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.