Finding the Fourth Proportional to 77,042,812.73, 106,319,072.40 and 42,235,749.09
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Solution
The fourth proportional to 77,042,812.73, 106,319,072.40 and 42,235,749.09 is: 58,285,328.72
Step by Step Solution
- Step 1: Write the proportion equation
77,042,812.73 : 106,319,072.40 = 42,235,749.09 : x - Step 2: Convert to fraction form
77,042,812.73/106,319,072.40 = 42,235,749.09/x - Step 3: Cross multiply
77,042,812.73x = 106,319,072.40 × 42,235,749.09 - Step 4: Simplify right side
77,042,812.73x = 4,490,465,665,367,944.50 - Step 5: Solve for x
x = 4,490,465,665,367,944.50/77,042,812.73 - Step 6: Final answer
x = 58,285,328.72
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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.