Finding the Fourth Proportional to 77,380,699.62, 106,724,919.42 and 47,995,555.26
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Solution
The fourth proportional to 77,380,699.62, 106,724,919.42 and 47,995,555.26 is: 66,196,374.46
Step by Step Solution
- Step 1: Write the proportion equation
77,380,699.62 : 106,724,919.42 = 47,995,555.26 : x - Step 2: Convert to fraction form
77,380,699.62/106,724,919.42 = 47,995,555.26/x - Step 3: Cross multiply
77,380,699.62x = 106,724,919.42 × 47,995,555.26 - Step 4: Simplify right side
77,380,699.62x = 5,122,321,767,641,657 - Step 5: Solve for x
x = 5,122,321,767,641,657/77,380,699.62 - Step 6: Final answer
x = 66,196,374.46
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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.