Finding the Fourth Proportional to 30,369,147.20, 41,909,309.64 and 16,430,457.68
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Solution
The fourth proportional to 30,369,147.20, 41,909,309.64 and 16,430,457.68 is: 22,673,970.19
Step by Step Solution
- Step 1: Write the proportion equation
30,369,147.20 : 41,909,309.64 = 16,430,457.68 : x - Step 2: Convert to fraction form
30,369,147.20/41,909,309.64 = 16,430,457.68/x - Step 3: Cross multiply
30,369,147.20x = 41,909,309.64 × 16,430,457.68 - Step 4: Simplify right side
30,369,147.20x = 688,589,138,438,036 - Step 5: Solve for x
x = 688,589,138,438,036/30,369,147.20 - Step 6: Final answer
x = 22,673,970.19
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.