Finding the Fourth Proportional to 81,255,776.12, 121,811,918.85 and 62,171,729.81
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Solution
The fourth proportional to 81,255,776.12, 121,811,918.85 and 62,171,729.81 is: 93,202,699.77
Step by Step Solution
- Step 1: Write the proportion equation
81,255,776.12 : 121,811,918.85 = 62,171,729.81 : x - Step 2: Convert to fraction form
81,255,776.12/121,811,918.85 = 62,171,729.81/x - Step 3: Cross multiply
81,255,776.12x = 121,811,918.85 × 62,171,729.81 - Step 4: Simplify right side
81,255,776.12x = 7,573,257,705,770,786 - Step 5: Solve for x
x = 7,573,257,705,770,786/81,255,776.12 - Step 6: Final answer
x = 93,202,699.77
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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.