Finding the Fourth Proportional to 86,283,616.35, 129,425,424.53 and 78,473,401.95
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Solution
The fourth proportional to 86,283,616.35, 129,425,424.53 and 78,473,401.95 is: 117,710,102.93
Step by Step Solution
- Step 1: Write the proportion equation
86,283,616.35 : 129,425,424.53 = 78,473,401.95 : x - Step 2: Convert to fraction form
86,283,616.35/129,425,424.53 = 78,473,401.95/x - Step 3: Cross multiply
86,283,616.35x = 129,425,424.53 × 78,473,401.95 - Step 4: Simplify right side
86,283,616.35x = 10,156,453,361,299,714 - Step 5: Solve for x
x = 10,156,453,361,299,714/86,283,616.35 - Step 6: Final answer
x = 117,710,102.93
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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.