Home / 84,268.86-126,403.63-21,088.80

Finding the Fourth Proportional to 84,268.86, 126,403.63 and 21,088.80

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Solution

The fourth proportional to 84,268.86, 126,403.63 and 21,088.80 is: 31,633.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,268.86 : 126,403.63 = 21,088.80 : x
  2. Step 2: Convert to fraction form
    84,268.86/126,403.63 = 21,088.80/x
  3. Step 3: Cross multiply
    84,268.86x = 126,403.63 × 21,088.80
  4. Step 4: Simplify right side
    84,268.86x = 2,665,701,293.64
  5. Step 5: Solve for x
    x = 2,665,701,293.64/84,268.86
  6. Step 6: Final answer
    x = 31,633.29

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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.