Finding the Fourth Proportional to 78,416,246.30, 117,624,369.45 and 74,889,052.70
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Solution
The fourth proportional to 78,416,246.30, 117,624,369.45 and 74,889,052.70 is: 112,333,579.05
Step by Step Solution
- Step 1: Write the proportion equation
78,416,246.30 : 117,624,369.45 = 74,889,052.70 : x - Step 2: Convert to fraction form
78,416,246.30/117,624,369.45 = 74,889,052.70/x - Step 3: Cross multiply
78,416,246.30x = 117,624,369.45 × 74,889,052.70 - Step 4: Simplify right side
78,416,246.30x = 8,808,777,602,545,321 - Step 5: Solve for x
x = 8,808,777,602,545,321/78,416,246.30 - Step 6: Final answer
x = 112,333,579.05
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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.