Finding the Fourth Proportional to 81,480,072.80, 122,220,109.20 and 38,433,351.80
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Solution
The fourth proportional to 81,480,072.80, 122,220,109.20 and 38,433,351.80 is: 57,650,027.70
Step by Step Solution
- Step 1: Write the proportion equation
81,480,072.80 : 122,220,109.20 = 38,433,351.80 : x - Step 2: Convert to fraction form
81,480,072.80/122,220,109.20 = 38,433,351.80/x - Step 3: Cross multiply
81,480,072.80x = 122,220,109.20 × 38,433,351.80 - Step 4: Simplify right side
81,480,072.80x = 4,697,328,453,918,016 - Step 5: Solve for x
x = 4,697,328,453,918,016/81,480,072.80 - Step 6: Final answer
x = 57,650,027.70
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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.