Finding the Fourth Proportional to 77,302,728.40, 115,968,089.40 and 38,867,515.60
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Solution
The fourth proportional to 77,302,728.40, 115,968,089.40 and 38,867,515.60 is: 58,308,310.94
Step by Step Solution
- Step 1: Write the proportion equation
77,302,728.40 : 115,968,089.40 = 38,867,515.60 : x - Step 2: Convert to fraction form
77,302,728.40/115,968,089.40 = 38,867,515.60/x - Step 3: Cross multiply
77,302,728.40x = 115,968,089.40 × 38,867,515.60 - Step 4: Simplify right side
77,302,728.40x = 4,507,391,523,856,695 - Step 5: Solve for x
x = 4,507,391,523,856,695/77,302,728.40 - Step 6: Final answer
x = 58,308,310.94
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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.