Finding the Fourth Proportional to 72,012.23, 107,989.47 and 29,863.68
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Solution
The fourth proportional to 72,012.23, 107,989.47 and 29,863.68 is: 44,783.55
Step by Step Solution
- Step 1: Write the proportion equation
72,012.23 : 107,989.47 = 29,863.68 : x - Step 2: Convert to fraction form
72,012.23/107,989.47 = 29,863.68/x - Step 3: Cross multiply
72,012.23x = 107,989.47 × 29,863.68 - Step 4: Simplify right side
72,012.23x = 3,224,963,177.93 - Step 5: Solve for x
x = 3,224,963,177.93/72,012.23 - Step 6: Final answer
x = 44,783.55
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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.