Finding the Fourth Proportional to 78,027,074.51, 107,636,538.44 and 48,248,202.11
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Solution
The fourth proportional to 78,027,074.51, 107,636,538.44 and 48,248,202.11 is: 66,557,275.07
Step by Step Solution
- Step 1: Write the proportion equation
78,027,074.51 : 107,636,538.44 = 48,248,202.11 : x - Step 2: Convert to fraction form
78,027,074.51/107,636,538.44 = 48,248,202.11/x - Step 3: Cross multiply
78,027,074.51x = 107,636,538.44 × 48,248,202.11 - Step 4: Simplify right side
78,027,074.51x = 5,193,269,460,832,663 - Step 5: Solve for x
x = 5,193,269,460,832,663/78,027,074.51 - Step 6: Final answer
x = 66,557,275.07
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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.