Finding the Fourth Proportional to 98,458,135.68, 135,959,378.40 and 61,351,744.08
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Solution
The fourth proportional to 98,458,135.68, 135,959,378.40 and 61,351,744.08 is: 84,719,712.91
Step by Step Solution
- Step 1: Write the proportion equation
98,458,135.68 : 135,959,378.40 = 61,351,744.08 : x - Step 2: Convert to fraction form
98,458,135.68/135,959,378.40 = 61,351,744.08/x - Step 3: Cross multiply
98,458,135.68x = 135,959,378.40 × 61,351,744.08 - Step 4: Simplify right side
98,458,135.68x = 8,341,344,988,872,680 - Step 5: Solve for x
x = 8,341,344,988,872,680/98,458,135.68 - Step 6: Final answer
x = 84,719,712.91
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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.