Finding the Fourth Proportional to 87,276,965.35, 120,557,180.84 and 64,691,124.56
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Solution
The fourth proportional to 87,276,965.35, 120,557,180.84 and 64,691,124.56 is: 89,358,968.56
Step by Step Solution
- Step 1: Write the proportion equation
87,276,965.35 : 120,557,180.84 = 64,691,124.56 : x - Step 2: Convert to fraction form
87,276,965.35/120,557,180.84 = 64,691,124.56/x - Step 3: Cross multiply
87,276,965.35x = 120,557,180.84 × 64,691,124.56 - Step 4: Simplify right side
87,276,965.35x = 7,798,979,602,322,886 - Step 5: Solve for x
x = 7,798,979,602,322,886/87,276,965.35 - Step 6: Final answer
x = 89,358,968.56
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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.