Finding the Fourth Proportional to 38,909,469.48, 53,695,278.84 and 21,268,395.68
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Solution
The fourth proportional to 38,909,469.48, 53,695,278.84 and 21,268,395.68 is: 29,350,501.35
Step by Step Solution
- Step 1: Write the proportion equation
38,909,469.48 : 53,695,278.84 = 21,268,395.68 : x - Step 2: Convert to fraction form
38,909,469.48/53,695,278.84 = 21,268,395.68/x - Step 3: Cross multiply
38,909,469.48x = 53,695,278.84 × 21,268,395.68 - Step 4: Simplify right side
38,909,469.48x = 1,142,012,436,517,051.50 - Step 5: Solve for x
x = 1,142,012,436,517,051.50/38,909,469.48 - Step 6: Final answer
x = 29,350,501.35
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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.