Home / 53,420.09-80,141.48-20,139.35

Finding the Fourth Proportional to 53,420.09, 80,141.48 and 20,139.35

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Solution

The fourth proportional to 53,420.09, 80,141.48 and 20,139.35 is: 30,213.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,420.09 : 80,141.48 = 20,139.35 : x
  2. Step 2: Convert to fraction form
    53,420.09/80,141.48 = 20,139.35/x
  3. Step 3: Cross multiply
    53,420.09x = 80,141.48 × 20,139.35
  4. Step 4: Simplify right side
    53,420.09x = 1,613,997,565.94
  5. Step 5: Solve for x
    x = 1,613,997,565.94/53,420.09
  6. Step 6: Final answer
    x = 30,213.31

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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.