Finding the Fourth Proportional to 70,207,877.70, 105,311,816.55 and 53,201,765.70
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Solution
The fourth proportional to 70,207,877.70, 105,311,816.55 and 53,201,765.70 is: 79,802,648.55
Step by Step Solution
- Step 1: Write the proportion equation
70,207,877.70 : 105,311,816.55 = 53,201,765.70 : x - Step 2: Convert to fraction form
70,207,877.70/105,311,816.55 = 53,201,765.70/x - Step 3: Cross multiply
70,207,877.70x = 105,311,816.55 × 53,201,765.70 - Step 4: Simplify right side
70,207,877.70x = 5,602,774,589,534,482 - Step 5: Solve for x
x = 5,602,774,589,534,482/70,207,877.70 - Step 6: Final answer
x = 79,802,648.55
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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.