Home / 80,979.78-111,747.27-46,985.64

Finding the Fourth Proportional to 80,979.78, 111,747.27 and 46,985.64

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Solution

The fourth proportional to 80,979.78, 111,747.27 and 46,985.64 is: 64,837.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,979.78 : 111,747.27 = 46,985.64 : x
  2. Step 2: Convert to fraction form
    80,979.78/111,747.27 = 46,985.64/x
  3. Step 3: Cross multiply
    80,979.78x = 111,747.27 × 46,985.64
  4. Step 4: Simplify right side
    80,979.78x = 5,250,516,999.20
  5. Step 5: Solve for x
    x = 5,250,516,999.20/80,979.78
  6. Step 6: Final answer
    x = 64,837.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.