Finding the Fourth Proportional to 79,921,878.62, 110,292,191.13 and 43,252,449.62
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Solution
The fourth proportional to 79,921,878.62, 110,292,191.13 and 43,252,449.62 is: 59,688,379.74
Step by Step Solution
- Step 1: Write the proportion equation
79,921,878.62 : 110,292,191.13 = 43,252,449.62 : x - Step 2: Convert to fraction form
79,921,878.62/110,292,191.13 = 43,252,449.62/x - Step 3: Cross multiply
79,921,878.62x = 110,292,191.13 × 43,252,449.62 - Step 4: Simplify right side
79,921,878.62x = 4,770,407,440,329,735 - Step 5: Solve for x
x = 4,770,407,440,329,735/79,921,878.62 - Step 6: Final answer
x = 59,688,379.74
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.