Finding the Fourth Proportional to 76,788,000.80, 115,182,001.20 and 48,090,186.80
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Solution
The fourth proportional to 76,788,000.80, 115,182,001.20 and 48,090,186.80 is: 72,135,280.20
Step by Step Solution
- Step 1: Write the proportion equation
76,788,000.80 : 115,182,001.20 = 48,090,186.80 : x - Step 2: Convert to fraction form
76,788,000.80/115,182,001.20 = 48,090,186.80/x - Step 3: Cross multiply
76,788,000.80x = 115,182,001.20 × 48,090,186.80 - Step 4: Simplify right side
76,788,000.80x = 5,539,123,953,705,824 - Step 5: Solve for x
x = 5,539,123,953,705,824/76,788,000.80 - Step 6: Final answer
x = 72,135,280.20
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1.5x scale
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.