Home / 54,843.12-75,684.96-30,970.32

Finding the Fourth Proportional to 54,843.12, 75,684.96 and 30,970.32

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Solution

The fourth proportional to 54,843.12, 75,684.96 and 30,970.32 is: 42,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,843.12 : 75,684.96 = 30,970.32 : x
  2. Step 2: Convert to fraction form
    54,843.12/75,684.96 = 30,970.32/x
  3. Step 3: Cross multiply
    54,843.12x = 75,684.96 × 30,970.32
  4. Step 4: Simplify right side
    54,843.12x = 2,343,987,430.39
  5. Step 5: Solve for x
    x = 2,343,987,430.39/54,843.12
  6. Step 6: Final answer
    x = 42,739.86

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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.