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Finding the Fourth Proportional to 43,505.91, 65,284.79 and 15,806.07

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Solution

The fourth proportional to 43,505.91, 65,284.79 and 15,806.07 is: 23,718.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,505.91 : 65,284.79 = 15,806.07 : x
  2. Step 2: Convert to fraction form
    43,505.91/65,284.79 = 15,806.07/x
  3. Step 3: Cross multiply
    43,505.91x = 65,284.79 × 15,806.07
  4. Step 4: Simplify right side
    43,505.91x = 1,031,895,881.64
  5. Step 5: Solve for x
    x = 1,031,895,881.64/43,505.91
  6. Step 6: Final answer
    x = 23,718.52

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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.