Finding the Fourth Proportional to 79,778,890.70, 119,668,336.05 and 66,174,001.10
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Solution
The fourth proportional to 79,778,890.70, 119,668,336.05 and 66,174,001.10 is: 99,261,001.65
Step by Step Solution
- Step 1: Write the proportion equation
79,778,890.70 : 119,668,336.05 = 66,174,001.10 : x - Step 2: Convert to fraction form
79,778,890.70/119,668,336.05 = 66,174,001.10/x - Step 3: Cross multiply
79,778,890.70x = 119,668,336.05 × 66,174,001.10 - Step 4: Simplify right side
79,778,890.70x = 7,918,932,601,407,870 - Step 5: Solve for x
x = 7,918,932,601,407,870/79,778,890.70 - Step 6: Final answer
x = 99,261,001.65
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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.