Finding the Fourth Proportional to 76,936,941.60, 115,405,412.40 and 48,271,495.20
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Solution
The fourth proportional to 76,936,941.60, 115,405,412.40 and 48,271,495.20 is: 72,407,242.80
Step by Step Solution
- Step 1: Write the proportion equation
76,936,941.60 : 115,405,412.40 = 48,271,495.20 : x - Step 2: Convert to fraction form
76,936,941.60/115,405,412.40 = 48,271,495.20/x - Step 3: Cross multiply
76,936,941.60x = 115,405,412.40 × 48,271,495.20 - Step 4: Simplify right side
76,936,941.60x = 5,570,791,810,720,621 - Step 5: Solve for x
x = 5,570,791,810,720,621/76,936,941.60 - Step 6: Final answer
x = 72,407,242.80
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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.