Finding the Fourth Proportional to 78,889,406.68, 118,334,108.19 and 21,381,676.70
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Solution
The fourth proportional to 78,889,406.68, 118,334,108.19 and 21,381,676.70 is: 32,072,514.55
Step by Step Solution
- Step 1: Write the proportion equation
78,889,406.68 : 118,334,108.19 = 21,381,676.70 : x - Step 2: Convert to fraction form
78,889,406.68/118,334,108.19 = 21,381,676.70/x - Step 3: Cross multiply
78,889,406.68x = 118,334,108.19 × 21,381,676.70 - Step 4: Simplify right side
78,889,406.68x = 2,530,181,643,901,402 - Step 5: Solve for x
x = 2,530,181,643,901,402/78,889,406.68 - Step 6: Final answer
x = 32,072,514.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.