Finding the Fourth Proportional to 38,438,021.80, 57,643,035.90 and 19,262,405.80
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Solution
The fourth proportional to 38,438,021.80, 57,643,035.90 and 19,262,405.80 is: 28,886,594.50
Step by Step Solution
- Step 1: Write the proportion equation
38,438,021.80 : 57,643,035.90 = 19,262,405.80 : x - Step 2: Convert to fraction form
38,438,021.80/57,643,035.90 = 19,262,405.80/x - Step 3: Cross multiply
38,438,021.80x = 57,643,035.90 × 19,262,405.80 - Step 4: Simplify right side
38,438,021.80x = 1,110,343,549,049,768.25 - Step 5: Solve for x
x = 1,110,343,549,049,768.25/38,438,021.80 - Step 6: Final answer
x = 28,886,594.50
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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.