Finding the Fourth Proportional to 38,720,127.80, 58,080,191.70 and 18,564,735.80
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Solution
The fourth proportional to 38,720,127.80, 58,080,191.70 and 18,564,735.80 is: 27,847,103.70
Step by Step Solution
- Step 1: Write the proportion equation
38,720,127.80 : 58,080,191.70 = 18,564,735.80 : x - Step 2: Convert to fraction form
38,720,127.80/58,080,191.70 = 18,564,735.80/x - Step 3: Cross multiply
38,720,127.80x = 58,080,191.70 × 18,564,735.80 - Step 4: Simplify right side
38,720,127.80x = 1,078,243,414,123,853 - Step 5: Solve for x
x = 1,078,243,414,123,853/38,720,127.80 - Step 6: Final answer
x = 27,847,103.70
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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.