Finding the Fourth Proportional to 80,954.78, 121,509.93 and 39,430.94
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Solution
The fourth proportional to 80,954.78, 121,509.93 and 39,430.94 is: 59,184.28
Step by Step Solution
- Step 1: Write the proportion equation
80,954.78 : 121,509.93 = 39,430.94 : x - Step 2: Convert to fraction form
80,954.78/121,509.93 = 39,430.94/x - Step 3: Cross multiply
80,954.78x = 121,509.93 × 39,430.94 - Step 4: Simplify right side
80,954.78x = 4,791,250,759.23 - Step 5: Solve for x
x = 4,791,250,759.23/80,954.78 - Step 6: Final answer
x = 59,184.28
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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.