Finding the Fourth Proportional to 98,331,816.96, 135,697,931.64 and 54,278,840.88
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Solution
The fourth proportional to 98,331,816.96, 135,697,931.64 and 54,278,840.88 is: 74,904,813.79
Step by Step Solution
- Step 1: Write the proportion equation
98,331,816.96 : 135,697,931.64 = 54,278,840.88 : x - Step 2: Convert to fraction form
98,331,816.96/135,697,931.64 = 54,278,840.88/x - Step 3: Cross multiply
98,331,816.96x = 135,697,931.64 × 54,278,840.88 - Step 4: Simplify right side
98,331,816.96x = 7,365,526,439,232,677 - Step 5: Solve for x
x = 7,365,526,439,232,677/98,331,816.96 - Step 6: Final answer
x = 74,904,813.79
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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.