Finding the Fourth Proportional to 79,239,347.40, 118,859,021.10 and 72,436,902.60
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Solution
The fourth proportional to 79,239,347.40, 118,859,021.10 and 72,436,902.60 is: 108,655,353.90
Step by Step Solution
- Step 1: Write the proportion equation
79,239,347.40 : 118,859,021.10 = 72,436,902.60 : x - Step 2: Convert to fraction form
79,239,347.40/118,859,021.10 = 72,436,902.60/x - Step 3: Cross multiply
79,239,347.40x = 118,859,021.10 × 72,436,902.60 - Step 4: Simplify right side
79,239,347.40x = 8,609,779,334,552,044 - Step 5: Solve for x
x = 8,609,779,334,552,044/79,239,347.40 - Step 6: Final answer
x = 108,655,353.90
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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.