Finding the Fourth Proportional to 51,439,982.21, 77,142,676.37 and 18,643,685.81
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Solution
The fourth proportional to 51,439,982.21, 77,142,676.37 and 18,643,685.81 is: 27,959,259.68
Step by Step Solution
- Step 1: Write the proportion equation
51,439,982.21 : 77,142,676.37 = 18,643,685.81 : x - Step 2: Convert to fraction form
51,439,982.21/77,142,676.37 = 18,643,685.81/x - Step 3: Cross multiply
51,439,982.21x = 77,142,676.37 × 18,643,685.81 - Step 4: Simplify right side
51,439,982.21x = 1,438,223,820,739,787 - Step 5: Solve for x
x = 1,438,223,820,739,787/51,439,982.21 - Step 6: Final answer
x = 27,959,259.68
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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.