Finding the Fourth Proportional to 39,207,319.80, 58,810,979.70 and 20,031,703.80
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Solution
The fourth proportional to 39,207,319.80, 58,810,979.70 and 20,031,703.80 is: 30,047,555.70
Step by Step Solution
- Step 1: Write the proportion equation
39,207,319.80 : 58,810,979.70 = 20,031,703.80 : x - Step 2: Convert to fraction form
39,207,319.80/58,810,979.70 = 20,031,703.80/x - Step 3: Cross multiply
39,207,319.80x = 58,810,979.70 × 20,031,703.80 - Step 4: Simplify right side
39,207,319.80x = 1,178,084,125,538,213 - Step 5: Solve for x
x = 1,178,084,125,538,213/39,207,319.80 - Step 6: Final answer
x = 30,047,555.70
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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.