Finding the Fourth Proportional to 67,156,948.70, 100,735,423.05 and 53,720,020.70
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Solution
The fourth proportional to 67,156,948.70, 100,735,423.05 and 53,720,020.70 is: 80,580,031.05
Step by Step Solution
- Step 1: Write the proportion equation
67,156,948.70 : 100,735,423.05 = 53,720,020.70 : x - Step 2: Convert to fraction form
67,156,948.70/100,735,423.05 = 53,720,020.70/x - Step 3: Cross multiply
67,156,948.70x = 100,735,423.05 × 53,720,020.70 - Step 4: Simplify right side
67,156,948.70x = 5,411,509,011,469,257 - Step 5: Solve for x
x = 5,411,509,011,469,257/67,156,948.70 - Step 6: Final answer
x = 80,580,031.05
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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.