Finding the Fourth Proportional to 72,455,442.20, 108,683,163.30 and 48,268,971.80
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Solution
The fourth proportional to 72,455,442.20, 108,683,163.30 and 48,268,971.80 is: 72,403,457.70
Step by Step Solution
- Step 1: Write the proportion equation
72,455,442.20 : 108,683,163.30 = 48,268,971.80 : x - Step 2: Convert to fraction form
72,455,442.20/108,683,163.30 = 48,268,971.80/x - Step 3: Cross multiply
72,455,442.20x = 108,683,163.30 × 48,268,971.80 - Step 4: Simplify right side
72,455,442.20x = 5,246,024,544,462,494 - Step 5: Solve for x
x = 5,246,024,544,462,494/72,455,442.20 - Step 6: Final answer
x = 72,403,457.70
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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.