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Finding the Fourth Proportional to 56,422.40, 84,622.80 and 16,980.80

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Solution

The fourth proportional to 56,422.40, 84,622.80 and 16,980.80 is: 25,467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,422.40 : 84,622.80 = 16,980.80 : x
  2. Step 2: Convert to fraction form
    56,422.40/84,622.80 = 16,980.80/x
  3. Step 3: Cross multiply
    56,422.40x = 84,622.80 × 16,980.80
  4. Step 4: Simplify right side
    56,422.40x = 1,436,962,842.24
  5. Step 5: Solve for x
    x = 1,436,962,842.24/56,422.40
  6. Step 6: Final answer
    x = 25,467.95

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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.