Home / 38,481.12-53,070.48-30,509.28

Finding the Fourth Proportional to 38,481.12, 53,070.48 and 30,509.28

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Solution

The fourth proportional to 38,481.12, 53,070.48 and 30,509.28 is: 42,076.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,481.12 : 53,070.48 = 30,509.28 : x
  2. Step 2: Convert to fraction form
    38,481.12/53,070.48 = 30,509.28/x
  3. Step 3: Cross multiply
    38,481.12x = 53,070.48 × 30,509.28
  4. Step 4: Simplify right side
    38,481.12x = 1,619,142,134.05
  5. Step 5: Solve for x
    x = 1,619,142,134.05/38,481.12
  6. Step 6: Final answer
    x = 42,076.27

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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.