Finding the Fourth Proportional to 81,495,756.05, 112,453,935.80 and 55,091,560.12
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Solution
The fourth proportional to 81,495,756.05, 112,453,935.80 and 55,091,560.12 is: 76,019,452.61
Step by Step Solution
- Step 1: Write the proportion equation
81,495,756.05 : 112,453,935.80 = 55,091,560.12 : x - Step 2: Convert to fraction form
81,495,756.05/112,453,935.80 = 55,091,560.12/x - Step 3: Cross multiply
81,495,756.05x = 112,453,935.80 × 55,091,560.12 - Step 4: Simplify right side
81,495,756.05x = 6,195,262,764,299,728 - Step 5: Solve for x
x = 6,195,262,764,299,728/81,495,756.05 - Step 6: Final answer
x = 76,019,452.61
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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.