Finding the Fourth Proportional to 76,912,964.70, 115,369,447.05 and 74,225,579.10
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Solution
The fourth proportional to 76,912,964.70, 115,369,447.05 and 74,225,579.10 is: 111,338,368.65
Step by Step Solution
- Step 1: Write the proportion equation
76,912,964.70 : 115,369,447.05 = 74,225,579.10 : x - Step 2: Convert to fraction form
76,912,964.70/115,369,447.05 = 74,225,579.10/x - Step 3: Cross multiply
76,912,964.70x = 115,369,447.05 × 74,225,579.10 - Step 4: Simplify right side
76,912,964.70x = 8,563,364,017,733,036 - Step 5: Solve for x
x = 8,563,364,017,733,036/76,912,964.70 - Step 6: Final answer
x = 111,338,368.65
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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.