Finding the Fourth Proportional to 21,703,138.79, 32,547,851.67 and 7,127,656.56
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Solution
The fourth proportional to 21,703,138.79, 32,547,851.67 and 7,127,656.56 is: 10,689,233.05
Step by Step Solution
- Step 1: Write the proportion equation
21,703,138.79 : 32,547,851.67 = 7,127,656.56 : x - Step 2: Convert to fraction form
21,703,138.79/32,547,851.67 = 7,127,656.56/x - Step 3: Cross multiply
21,703,138.79x = 32,547,851.67 × 7,127,656.56 - Step 4: Simplify right side
21,703,138.79x = 231,989,908,469,582.47 - Step 5: Solve for x
x = 231,989,908,469,582.47/21,703,138.79 - Step 6: Final answer
x = 10,689,233.05
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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.