Finding the Fourth Proportional to 87,387,512.70, 120,593,058.12 and 47,695,328.04
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Solution
The fourth proportional to 87,387,512.70, 120,593,058.12 and 47,695,328.04 is: 65,818,619.72
Step by Step Solution
- Step 1: Write the proportion equation
87,387,512.70 : 120,593,058.12 = 47,695,328.04 : x - Step 2: Convert to fraction form
87,387,512.70/120,593,058.12 = 47,695,328.04/x - Step 3: Cross multiply
87,387,512.70x = 120,593,058.12 × 47,695,328.04 - Step 4: Simplify right side
87,387,512.70x = 5,751,725,466,380,186 - Step 5: Solve for x
x = 5,751,725,466,380,186/87,387,512.70 - Step 6: Final answer
x = 65,818,619.72
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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.