Finding the Fourth Proportional to 98,458,131.18, 135,959,372.19 and 61,351,739.58
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Solution
The fourth proportional to 98,458,131.18, 135,959,372.19 and 61,351,739.58 is: 84,719,706.70
Step by Step Solution
- Step 1: Write the proportion equation
98,458,131.18 : 135,959,372.19 = 61,351,739.58 : x - Step 2: Convert to fraction form
98,458,131.18/135,959,372.19 = 61,351,739.58/x - Step 3: Cross multiply
98,458,131.18x = 135,959,372.19 × 61,351,739.58 - Step 4: Simplify right side
98,458,131.18x = 8,341,343,996,061,174 - Step 5: Solve for x
x = 8,341,343,996,061,174/98,458,131.18 - Step 6: Final answer
x = 84,719,706.70
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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.