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Finding the Fourth Proportional to 45,661.60, 68,491.44 and 21,037.60

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Solution

The fourth proportional to 45,661.60, 68,491.44 and 21,037.60 is: 31,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,661.60 : 68,491.44 = 21,037.60 : x
  2. Step 2: Convert to fraction form
    45,661.60/68,491.44 = 21,037.60/x
  3. Step 3: Cross multiply
    45,661.60x = 68,491.44 × 21,037.60
  4. Step 4: Simplify right side
    45,661.60x = 1,440,895,518.14
  5. Step 5: Solve for x
    x = 1,440,895,518.14/45,661.60
  6. Step 6: Final answer
    x = 31,555.96

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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.