Finding the Fourth Proportional to 38,900,296.61, 53,682,576.70 and 21,259,560.95
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Solution
The fourth proportional to 38,900,296.61, 53,682,576.70 and 21,259,560.95 is: 29,338,285.59
Step by Step Solution
- Step 1: Write the proportion equation
38,900,296.61 : 53,682,576.70 = 21,259,560.95 : x - Step 2: Convert to fraction form
38,900,296.61/53,682,576.70 = 21,259,560.95/x - Step 3: Cross multiply
38,900,296.61x = 53,682,576.70 × 21,259,560.95 - Step 4: Simplify right side
38,900,296.61x = 1,141,268,011,557,361 - Step 5: Solve for x
x = 1,141,268,011,557,361/38,900,296.61 - Step 6: Final answer
x = 29,338,285.59
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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.