Finding the Fourth Proportional to 64,445,679.20, 88,936,961.99 and 39,680,153.37
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Solution
The fourth proportional to 64,445,679.20, 88,936,961.99 and 39,680,153.37 is: 54,759,796.71
Step by Step Solution
- Step 1: Write the proportion equation
64,445,679.20 : 88,936,961.99 = 39,680,153.37 : x - Step 2: Convert to fraction form
64,445,679.20/88,936,961.99 = 39,680,153.37/x - Step 3: Cross multiply
64,445,679.20x = 88,936,961.99 × 39,680,153.37 - Step 4: Simplify right side
64,445,679.20x = 3,529,032,291,826,659.50 - Step 5: Solve for x
x = 3,529,032,291,826,659.50/64,445,679.20 - Step 6: Final answer
x = 54,759,796.71
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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.