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Finding the Fourth Proportional to 56,453.80, 84,680.85 and 19,040.15

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Solution

The fourth proportional to 56,453.80, 84,680.85 and 19,040.15 is: 28,560.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,453.80 : 84,680.85 = 19,040.15 : x
  2. Step 2: Convert to fraction form
    56,453.80/84,680.85 = 19,040.15/x
  3. Step 3: Cross multiply
    56,453.80x = 84,680.85 × 19,040.15
  4. Step 4: Simplify right side
    56,453.80x = 1,612,336,086.13
  5. Step 5: Solve for x
    x = 1,612,336,086.13/56,453.80
  6. Step 6: Final answer
    x = 28,560.28

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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.