Finding the Fourth Proportional to 48,387,947.80, 72,581,921.70 and 12,486,155.80
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Solution
The fourth proportional to 48,387,947.80, 72,581,921.70 and 12,486,155.80 is: 18,729,233.70
Step by Step Solution
- Step 1: Write the proportion equation
48,387,947.80 : 72,581,921.70 = 12,486,155.80 : x - Step 2: Convert to fraction form
48,387,947.80/72,581,921.70 = 12,486,155.80/x - Step 3: Cross multiply
48,387,947.80x = 72,581,921.70 × 12,486,155.80 - Step 4: Simplify right side
48,387,947.80x = 906,269,182,609,601 - Step 5: Solve for x
x = 906,269,182,609,601/48,387,947.80 - Step 6: Final answer
x = 18,729,233.70
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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.