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Finding the Fourth Proportional to 37,216.60, 55,824.90 and 21,405.40

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Solution

The fourth proportional to 37,216.60, 55,824.90 and 21,405.40 is: 32,108.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,216.60 : 55,824.90 = 21,405.40 : x
  2. Step 2: Convert to fraction form
    37,216.60/55,824.90 = 21,405.40/x
  3. Step 3: Cross multiply
    37,216.60x = 55,824.90 × 21,405.40
  4. Step 4: Simplify right side
    37,216.60x = 1,194,954,314.46
  5. Step 5: Solve for x
    x = 1,194,954,314.46/37,216.60
  6. Step 6: Final answer
    x = 32,108.10

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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.