Finding the Fourth Proportional to 81,192,644.20, 121,788,966.30 and 63,973,955.80
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Solution
The fourth proportional to 81,192,644.20, 121,788,966.30 and 63,973,955.80 is: 95,960,933.70
Step by Step Solution
- Step 1: Write the proportion equation
81,192,644.20 : 121,788,966.30 = 63,973,955.80 : x - Step 2: Convert to fraction form
81,192,644.20/121,788,966.30 = 63,973,955.80/x - Step 3: Cross multiply
81,192,644.20x = 121,788,966.30 × 63,973,955.80 - Step 4: Simplify right side
81,192,644.20x = 7,791,321,947,003,889 - Step 5: Solve for x
x = 7,791,321,947,003,889/81,192,644.20 - Step 6: Final answer
x = 95,960,933.70
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1.5x scale
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.