Finding the Fourth Proportional to 38,769,512.85, 53,500,941.86 and 21,128,868.99
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Solution
The fourth proportional to 38,769,512.85, 53,500,941.86 and 21,128,868.99 is: 29,157,301.92
Step by Step Solution
- Step 1: Write the proportion equation
38,769,512.85 : 53,500,941.86 = 21,128,868.99 : x - Step 2: Convert to fraction form
38,769,512.85/53,500,941.86 = 21,128,868.99/x - Step 3: Cross multiply
38,769,512.85x = 53,500,941.86 × 21,128,868.99 - Step 4: Simplify right side
38,769,512.85x = 1,130,414,391,295,902.50 - Step 5: Solve for x
x = 1,130,414,391,295,902.50/38,769,512.85 - Step 6: Final answer
x = 29,157,301.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.