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Finding the Fourth Proportional to 43,661.52, 65,495.16 and 15,978.96

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Solution

The fourth proportional to 43,661.52, 65,495.16 and 15,978.96 is: 23,969.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,661.52 : 65,495.16 = 15,978.96 : x
  2. Step 2: Convert to fraction form
    43,661.52/65,495.16 = 15,978.96/x
  3. Step 3: Cross multiply
    43,661.52x = 65,495.16 × 15,978.96
  4. Step 4: Simplify right side
    43,661.52x = 1,046,544,541.83
  5. Step 5: Solve for x
    x = 1,046,544,541.83/43,661.52
  6. Step 6: Final answer
    x = 23,969.49

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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.