Finding the Fourth Proportional to 66,871,976.68, 92,293,414.89 and 40,781,629.18
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Solution
The fourth proportional to 66,871,976.68, 92,293,414.89 and 40,781,629.18 is: 56,284,799.83
Step by Step Solution
- Step 1: Write the proportion equation
66,871,976.68 : 92,293,414.89 = 40,781,629.18 : x - Step 2: Convert to fraction form
66,871,976.68/92,293,414.89 = 40,781,629.18/x - Step 3: Cross multiply
66,871,976.68x = 92,293,414.89 × 40,781,629.18 - Step 4: Simplify right side
66,871,976.68x = 3,763,875,821,338,403 - Step 5: Solve for x
x = 3,763,875,821,338,403/66,871,976.68 - Step 6: Final answer
x = 56,284,799.83
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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.