Finding the Fourth Proportional to 79,841,148.80, 119,761,723.20 and 54,331,980.80
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Solution
The fourth proportional to 79,841,148.80, 119,761,723.20 and 54,331,980.80 is: 81,497,971.20
Step by Step Solution
- Step 1: Write the proportion equation
79,841,148.80 : 119,761,723.20 = 54,331,980.80 : x - Step 2: Convert to fraction form
79,841,148.80/119,761,723.20 = 54,331,980.80/x - Step 3: Cross multiply
79,841,148.80x = 119,761,723.20 × 54,331,980.80 - Step 4: Simplify right side
79,841,148.80x = 6,506,891,645,477,314 - Step 5: Solve for x
x = 6,506,891,645,477,314/79,841,148.80 - Step 6: Final answer
x = 81,497,971.20
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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.