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Finding the Fourth Proportional to 53,770.85, 80,639.01 and 17,739.20

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Solution

The fourth proportional to 53,770.85, 80,639.01 and 17,739.20 is: 26,603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,770.85 : 80,639.01 = 17,739.20 : x
  2. Step 2: Convert to fraction form
    53,770.85/80,639.01 = 17,739.20/x
  3. Step 3: Cross multiply
    53,770.85x = 80,639.01 × 17,739.20
  4. Step 4: Simplify right side
    53,770.85x = 1,430,471,652.95
  5. Step 5: Solve for x
    x = 1,430,471,652.95/53,770.85
  6. Step 6: Final answer
    x = 26,603.11

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1.5x scale

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.