Finding the Fourth Proportional to 76,831,686.49, 115,247,726.57 and 31,393,480.99
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Solution
The fourth proportional to 76,831,686.49, 115,247,726.57 and 31,393,480.99 is: 47,090,301.91
Step by Step Solution
- Step 1: Write the proportion equation
76,831,686.49 : 115,247,726.57 = 31,393,480.99 : x - Step 2: Convert to fraction form
76,831,686.49/115,247,726.57 = 31,393,480.99/x - Step 3: Cross multiply
76,831,686.49x = 115,247,726.57 × 31,393,480.99 - Step 4: Simplify right side
76,831,686.49x = 3,618,027,313,059,045 - Step 5: Solve for x
x = 3,618,027,313,059,045/76,831,686.49 - Step 6: Final answer
x = 47,090,301.91
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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.