Finding the Fourth Proportional to 87,276,975.06, 120,557,194.22 and 64,691,134.28
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Solution
The fourth proportional to 87,276,975.06, 120,557,194.22 and 64,691,134.28 is: 89,358,981.95
Step by Step Solution
- Step 1: Write the proportion equation
87,276,975.06 : 120,557,194.22 = 64,691,134.28 : x - Step 2: Convert to fraction form
87,276,975.06/120,557,194.22 = 64,691,134.28/x - Step 3: Cross multiply
87,276,975.06x = 120,557,194.22 × 64,691,134.28 - Step 4: Simplify right side
87,276,975.06x = 7,798,981,638,779,818 - Step 5: Solve for x
x = 7,798,981,638,779,818/87,276,975.06 - Step 6: Final answer
x = 89,358,981.95
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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.