Finding the Fourth Proportional to 29,161,688.05, 40,243,722.75 and 15,931,721.87
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Solution
The fourth proportional to 29,161,688.05, 40,243,722.75 and 15,931,721.87 is: 21,986,100.28
Step by Step Solution
- Step 1: Write the proportion equation
29,161,688.05 : 40,243,722.75 = 15,931,721.87 : x - Step 2: Convert to fraction form
29,161,688.05/40,243,722.75 = 15,931,721.87/x - Step 3: Cross multiply
29,161,688.05x = 40,243,722.75 × 15,931,721.87 - Step 4: Simplify right side
29,161,688.05x = 641,151,797,665,173 - Step 5: Solve for x
x = 641,151,797,665,173/29,161,688.05 - Step 6: Final answer
x = 21,986,100.28
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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.