Finding the Fourth Proportional to 31,605,971.31, 47,408,975.28 and 8,886,868.56
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Solution
The fourth proportional to 31,605,971.31, 47,408,975.28 and 8,886,868.56 is: 13,330,307.99
Step by Step Solution
- Step 1: Write the proportion equation
31,605,971.31 : 47,408,975.28 = 8,886,868.56 : x - Step 2: Convert to fraction form
31,605,971.31/47,408,975.28 = 8,886,868.56/x - Step 3: Cross multiply
31,605,971.31x = 47,408,975.28 × 8,886,868.56 - Step 4: Simplify right side
31,605,971.31x = 421,317,331,877,649.25 - Step 5: Solve for x
x = 421,317,331,877,649.25/31,605,971.31 - Step 6: Final answer
x = 13,330,307.99
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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.