Finding the Fourth Proportional to 72,724,683.98, 100,362,193.43 and 39,687,062.00
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Solution
The fourth proportional to 72,724,683.98, 100,362,193.43 and 39,687,062.00 is: 54,769,307.68
Step by Step Solution
- Step 1: Write the proportion equation
72,724,683.98 : 100,362,193.43 = 39,687,062.00 : x - Step 2: Convert to fraction form
72,724,683.98/100,362,193.43 = 39,687,062.00/x - Step 3: Cross multiply
72,724,683.98x = 100,362,193.43 × 39,687,062.00 - Step 4: Simplify right side
72,724,683.98x = 3,983,080,592,412,156 - Step 5: Solve for x
x = 3,983,080,592,412,156/72,724,683.98 - Step 6: Final answer
x = 54,769,307.68
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1.5x scale
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.