Finding the Fourth Proportional to 78,076,954.23, 107,611,709.45 and 51,924,742.62
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Solution
The fourth proportional to 78,076,954.23, 107,611,709.45 and 51,924,742.62 is: 71,566,704.56
Step by Step Solution
- Step 1: Write the proportion equation
78,076,954.23 : 107,611,709.45 = 51,924,742.62 : x - Step 2: Convert to fraction form
78,076,954.23/107,611,709.45 = 51,924,742.62/x - Step 3: Cross multiply
78,076,954.23x = 107,611,709.45 × 51,924,742.62 - Step 4: Simplify right side
78,076,954.23x = 5,587,710,316,089,472 - Step 5: Solve for x
x = 5,587,710,316,089,472/78,076,954.23 - Step 6: Final answer
x = 71,566,704.56
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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.