Finding the Fourth Proportional to 79,185,881.70, 118,778,822.55 and 66,431,297.70
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Solution
The fourth proportional to 79,185,881.70, 118,778,822.55 and 66,431,297.70 is: 99,646,946.55
Step by Step Solution
- Step 1: Write the proportion equation
79,185,881.70 : 118,778,822.55 = 66,431,297.70 : x - Step 2: Convert to fraction form
79,185,881.70/118,778,822.55 = 66,431,297.70/x - Step 3: Cross multiply
79,185,881.70x = 118,778,822.55 × 66,431,297.70 - Step 4: Simplify right side
79,185,881.70x = 7,890,631,321,274,523 - Step 5: Solve for x
x = 7,890,631,321,274,523/79,185,881.70 - Step 6: Final answer
x = 99,646,946.55
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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.