Finding the Fourth Proportional to 72,218,202.08, 99,659,318.64 and 40,427,926.88
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Solution
The fourth proportional to 72,218,202.08, 99,659,318.64 and 40,427,926.88 is: 55,789,531.32
Step by Step Solution
- Step 1: Write the proportion equation
72,218,202.08 : 99,659,318.64 = 40,427,926.88 : x - Step 2: Convert to fraction form
72,218,202.08/99,659,318.64 = 40,427,926.88/x - Step 3: Cross multiply
72,218,202.08x = 99,659,318.64 × 40,427,926.88 - Step 4: Simplify right side
72,218,202.08x = 4,029,019,646,888,541.50 - Step 5: Solve for x
x = 4,029,019,646,888,541.50/72,218,202.08 - Step 6: Final answer
x = 55,789,531.32
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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.