Home / 53,128.56-79,473.96-47,209.20

Finding the Fourth Proportional to 53,128.56, 79,473.96 and 47,209.20

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Solution

The fourth proportional to 53,128.56, 79,473.96 and 47,209.20 is: 70,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,128.56 : 79,473.96 = 47,209.20 : x
  2. Step 2: Convert to fraction form
    53,128.56/79,473.96 = 47,209.20/x
  3. Step 3: Cross multiply
    53,128.56x = 79,473.96 × 47,209.20
  4. Step 4: Simplify right side
    53,128.56x = 3,751,902,072.43
  5. Step 5: Solve for x
    x = 3,751,902,072.43/53,128.56
  6. Step 6: Final answer
    x = 70,619.31

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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.