Home / 53,418.72-80,130.12-15,979.32

Finding the Fourth Proportional to 53,418.72, 80,130.12 and 15,979.32

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Solution

The fourth proportional to 53,418.72, 80,130.12 and 15,979.32 is: 23,969.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,418.72 : 80,130.12 = 15,979.32 : x
  2. Step 2: Convert to fraction form
    53,418.72/80,130.12 = 15,979.32/x
  3. Step 3: Cross multiply
    53,418.72x = 80,130.12 × 15,979.32
  4. Step 4: Simplify right side
    53,418.72x = 1,280,424,829.12
  5. Step 5: Solve for x
    x = 1,280,424,829.12/53,418.72
  6. Step 6: Final answer
    x = 23,969.59

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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.