Finding the Fourth Proportional to 99,732,478.21, 137,643,515.91 and 57,908,217.31
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Solution
The fourth proportional to 99,732,478.21, 137,643,515.91 and 57,908,217.31 is: 79,920,711.62
Step by Step Solution
- Step 1: Write the proportion equation
99,732,478.21 : 137,643,515.91 = 57,908,217.31 : x - Step 2: Convert to fraction form
99,732,478.21/137,643,515.91 = 57,908,217.31/x - Step 3: Cross multiply
99,732,478.21x = 137,643,515.91 × 57,908,217.31 - Step 4: Simplify right side
99,732,478.21x = 7,970,690,630,284,613 - Step 5: Solve for x
x = 7,970,690,630,284,613/99,732,478.21 - Step 6: Final answer
x = 79,920,711.62
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.