Finding the Fourth Proportional to 92,292,136.70, 138,438,205.05 and 38,432,450.30
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Solution
The fourth proportional to 92,292,136.70, 138,438,205.05 and 38,432,450.30 is: 57,648,675.45
Step by Step Solution
- Step 1: Write the proportion equation
92,292,136.70 : 138,438,205.05 = 38,432,450.30 : x - Step 2: Convert to fraction form
92,292,136.70/138,438,205.05 = 38,432,450.30/x - Step 3: Cross multiply
92,292,136.70x = 138,438,205.05 × 38,432,450.30 - Step 4: Simplify right side
92,292,136.70x = 5,320,519,435,205,334 - Step 5: Solve for x
x = 5,320,519,435,205,334/92,292,136.70 - Step 6: Final answer
x = 57,648,675.45
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Double scale
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Similar ratio
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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.