Finding the Fourth Proportional to 77,113.20, 106,416.36 and 43,122.96
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Solution
The fourth proportional to 77,113.20, 106,416.36 and 43,122.96 is: 59,509.77
Step by Step Solution
- Step 1: Write the proportion equation
77,113.20 : 106,416.36 = 43,122.96 : x - Step 2: Convert to fraction form
77,113.20/106,416.36 = 43,122.96/x - Step 3: Cross multiply
77,113.20x = 106,416.36 × 43,122.96 - Step 4: Simplify right side
77,113.20x = 4,588,988,435.63 - Step 5: Solve for x
x = 4,588,988,435.63/77,113.20 - Step 6: Final answer
x = 59,509.77
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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.