Home / 42,705.82-64,051.44-20,218.60

Finding the Fourth Proportional to 42,705.82, 64,051.44 and 20,218.60

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Solution

The fourth proportional to 42,705.82, 64,051.44 and 20,218.60 is: 30,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,705.82 : 64,051.44 = 20,218.60 : x
  2. Step 2: Convert to fraction form
    42,705.82/64,051.44 = 20,218.60/x
  3. Step 3: Cross multiply
    42,705.82x = 64,051.44 × 20,218.60
  4. Step 4: Simplify right side
    42,705.82x = 1,295,030,444.78
  5. Step 5: Solve for x
    x = 1,295,030,444.78/42,705.82
  6. Step 6: Final answer
    x = 30,324.45

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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.