Finding the Fourth Proportional to 76,069.68, 104,971.80 and 42,076.08
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Solution
The fourth proportional to 76,069.68, 104,971.80 and 42,076.08 is: 58,062.58
Step by Step Solution
- Step 1: Write the proportion equation
76,069.68 : 104,971.80 = 42,076.08 : x - Step 2: Convert to fraction form
76,069.68/104,971.80 = 42,076.08/x - Step 3: Cross multiply
76,069.68x = 104,971.80 × 42,076.08 - Step 4: Simplify right side
76,069.68x = 4,416,801,854.54 - Step 5: Solve for x
x = 4,416,801,854.54/76,069.68 - Step 6: Final answer
x = 58,062.58
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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.