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Finding the Fourth Proportional to 43,511.99, 65,258.87 and 21,303

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Solution

The fourth proportional to 43,511.99, 65,258.87 and 21,303 is: 31,950.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,511.99 : 65,258.87 = 21,303 : x
  2. Step 2: Convert to fraction form
    43,511.99/65,258.87 = 21,303/x
  3. Step 3: Cross multiply
    43,511.99x = 65,258.87 × 21,303
  4. Step 4: Simplify right side
    43,511.99x = 1,390,209,601.10
  5. Step 5: Solve for x
    x = 1,390,209,601.10/43,511.99
  6. Step 6: Final answer
    x = 31,950.04

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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.