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Finding the Fourth Proportional to 55,256.40, 82,895.40 and 21,970.80

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Solution

The fourth proportional to 55,256.40, 82,895.40 and 21,970.80 is: 32,960.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,256.40 : 82,895.40 = 21,970.80 : x
  2. Step 2: Convert to fraction form
    55,256.40/82,895.40 = 21,970.80/x
  3. Step 3: Cross multiply
    55,256.40x = 82,895.40 × 21,970.80
  4. Step 4: Simplify right side
    55,256.40x = 1,821,278,254.32
  5. Step 5: Solve for x
    x = 1,821,278,254.32/55,256.40
  6. Step 6: Final answer
    x = 32,960.49

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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.