Finding the Fourth Proportional to 80,852,947.20, 121,279,420.80 and 29,724,386.40
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Solution
The fourth proportional to 80,852,947.20, 121,279,420.80 and 29,724,386.40 is: 44,586,579.60
Step by Step Solution
- Step 1: Write the proportion equation
80,852,947.20 : 121,279,420.80 = 29,724,386.40 : x - Step 2: Convert to fraction form
80,852,947.20/121,279,420.80 = 29,724,386.40/x - Step 3: Cross multiply
80,852,947.20x = 121,279,420.80 × 29,724,386.40 - Step 4: Simplify right side
80,852,947.20x = 3,604,956,366,227,397 - Step 5: Solve for x
x = 3,604,956,366,227,397/80,852,947.20 - Step 6: Final answer
x = 44,586,579.60
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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.