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Finding the Fourth Proportional to 65,697.80, 98,433.30 and 30,565.40

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Solution

The fourth proportional to 65,697.80, 98,433.30 and 30,565.40 is: 45,795.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,697.80 : 98,433.30 = 30,565.40 : x
  2. Step 2: Convert to fraction form
    65,697.80/98,433.30 = 30,565.40/x
  3. Step 3: Cross multiply
    65,697.80x = 98,433.30 × 30,565.40
  4. Step 4: Simplify right side
    65,697.80x = 3,008,653,187.82
  5. Step 5: Solve for x
    x = 3,008,653,187.82/65,697.80
  6. Step 6: Final answer
    x = 45,795.34

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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.