Finding the Fourth Proportional to 80,683,391.20, 120,395,803.04 and 71,987,715.19
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Solution
The fourth proportional to 80,683,391.20, 120,395,803.04 and 71,987,715.19 is: 107,420,110.27
Step by Step Solution
- Step 1: Write the proportion equation
80,683,391.20 : 120,395,803.04 = 71,987,715.19 : x - Step 2: Convert to fraction form
80,683,391.20/120,395,803.04 = 71,987,715.19/x - Step 3: Cross multiply
80,683,391.20x = 120,395,803.04 × 71,987,715.19 - Step 4: Simplify right side
80,683,391.20x = 8,667,018,779,314,856 - Step 5: Solve for x
x = 8,667,018,779,314,856/80,683,391.20 - Step 6: Final answer
x = 107,420,110.27
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.