Finding the Fourth Proportional to 81,192,639.70, 121,788,959.55 and 63,973,951.30
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Solution
The fourth proportional to 81,192,639.70, 121,788,959.55 and 63,973,951.30 is: 95,960,926.95
Step by Step Solution
- Step 1: Write the proportion equation
81,192,639.70 : 121,788,959.55 = 63,973,951.30 : x - Step 2: Convert to fraction form
81,192,639.70/121,788,959.55 = 63,973,951.30/x - Step 3: Cross multiply
81,192,639.70x = 121,788,959.55 × 63,973,951.30 - Step 4: Simplify right side
81,192,639.70x = 7,791,320,967,129,369 - Step 5: Solve for x
x = 7,791,320,967,129,369/81,192,639.70 - Step 6: Final answer
x = 95,960,926.95
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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.