Finding the Fourth Proportional to 61,690,362.66, 85,141,837.62 and 39,060,838.70
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Solution
The fourth proportional to 61,690,362.66, 85,141,837.62 and 39,060,838.70 is: 53,909,742.83
Step by Step Solution
- Step 1: Write the proportion equation
61,690,362.66 : 85,141,837.62 = 39,060,838.70 : x - Step 2: Convert to fraction form
61,690,362.66/85,141,837.62 = 39,060,838.70/x - Step 3: Cross multiply
61,690,362.66x = 85,141,837.62 × 39,060,838.70 - Step 4: Simplify right side
61,690,362.66x = 3,325,711,585,896,412.50 - Step 5: Solve for x
x = 3,325,711,585,896,412.50/61,690,362.66 - Step 6: Final answer
x = 53,909,742.83
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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.