Finding the Fourth Proportional to 76,953.60, 106,220.16 and 45,135.36
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Solution
The fourth proportional to 76,953.60, 106,220.16 and 45,135.36 is: 62,300.99
Step by Step Solution
- Step 1: Write the proportion equation
76,953.60 : 106,220.16 = 45,135.36 : x - Step 2: Convert to fraction form
76,953.60/106,220.16 = 45,135.36/x - Step 3: Cross multiply
76,953.60x = 106,220.16 × 45,135.36 - Step 4: Simplify right side
76,953.60x = 4,794,285,160.86 - Step 5: Solve for x
x = 4,794,285,160.86/76,953.60 - Step 6: Final answer
x = 62,300.99
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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.