Finding the Fourth Proportional to 80,781.63, 111,478.58 and 44,980.09
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Solution
The fourth proportional to 80,781.63, 111,478.58 and 44,980.09 is: 62,072.48
Step by Step Solution
- Step 1: Write the proportion equation
80,781.63 : 111,478.58 = 44,980.09 : x - Step 2: Convert to fraction form
80,781.63/111,478.58 = 44,980.09/x - Step 3: Cross multiply
80,781.63x = 111,478.58 × 44,980.09 - Step 4: Simplify right side
80,781.63x = 5,014,316,395.23 - Step 5: Solve for x
x = 5,014,316,395.23/80,781.63 - Step 6: Final answer
x = 62,072.48
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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.