Finding the Fourth Proportional to 84,006,476.70, 126,009,715.05 and 69,657,569.70
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Solution
The fourth proportional to 84,006,476.70, 126,009,715.05 and 69,657,569.70 is: 104,486,354.55
Step by Step Solution
- Step 1: Write the proportion equation
84,006,476.70 : 126,009,715.05 = 69,657,569.70 : x - Step 2: Convert to fraction form
84,006,476.70/126,009,715.05 = 69,657,569.70/x - Step 3: Cross multiply
84,006,476.70x = 126,009,715.05 × 69,657,569.70 - Step 4: Simplify right side
84,006,476.70x = 8,777,530,508,972,514 - Step 5: Solve for x
x = 8,777,530,508,972,514/84,006,476.70 - Step 6: Final answer
x = 104,486,354.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.