Finding the Fourth Proportional to 79,488,946.80, 119,233,420.20 and 66,052,018.80
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Solution
The fourth proportional to 79,488,946.80, 119,233,420.20 and 66,052,018.80 is: 99,078,028.20
Step by Step Solution
- Step 1: Write the proportion equation
79,488,946.80 : 119,233,420.20 = 66,052,018.80 : x - Step 2: Convert to fraction form
79,488,946.80/119,233,420.20 = 66,052,018.80/x - Step 3: Cross multiply
79,488,946.80x = 119,233,420.20 × 66,052,018.80 - Step 4: Simplify right side
79,488,946.80x = 7,875,608,112,638,700 - Step 5: Solve for x
x = 7,875,608,112,638,700/79,488,946.80 - Step 6: Final answer
x = 99,078,028.20
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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.