Finding the Fourth Proportional to 86,283,602.10, 129,425,403.15 and 78,473,387.70
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Solution
The fourth proportional to 86,283,602.10, 129,425,403.15 and 78,473,387.70 is: 117,710,081.55
Step by Step Solution
- Step 1: Write the proportion equation
86,283,602.10 : 129,425,403.15 = 78,473,387.70 : x - Step 2: Convert to fraction form
86,283,602.10/129,425,403.15 = 78,473,387.70/x - Step 3: Cross multiply
86,283,602.10x = 129,425,403.15 × 78,473,387.70 - Step 4: Simplify right side
86,283,602.10x = 10,156,449,839,618,752 - Step 5: Solve for x
x = 10,156,449,839,618,752/86,283,602.10 - Step 6: Final answer
x = 117,710,081.55
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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.