Finding the Fourth Proportional to 87,066,428.96, 120,148,069.64 and 47,374,123.08
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Solution
The fourth proportional to 87,066,428.96, 120,148,069.64 and 47,374,123.08 is: 65,374,329.77
Step by Step Solution
- Step 1: Write the proportion equation
87,066,428.96 : 120,148,069.64 = 47,374,123.08 : x - Step 2: Convert to fraction form
87,066,428.96/120,148,069.64 = 47,374,123.08/x - Step 3: Cross multiply
87,066,428.96x = 120,148,069.64 × 47,374,123.08 - Step 4: Simplify right side
87,066,428.96x = 5,691,909,438,349,031 - Step 5: Solve for x
x = 5,691,909,438,349,031/87,066,428.96 - Step 6: Final answer
x = 65,374,329.77
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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.