Finding the Fourth Proportional to 71,695.40, 107,543.10 and 68,973.80
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Solution
The fourth proportional to 71,695.40, 107,543.10 and 68,973.80 is: 103,460.70
Step by Step Solution
- Step 1: Write the proportion equation
71,695.40 : 107,543.10 = 68,973.80 : x - Step 2: Convert to fraction form
71,695.40/107,543.10 = 68,973.80/x - Step 3: Cross multiply
71,695.40x = 107,543.10 × 68,973.80 - Step 4: Simplify right side
71,695.40x = 7,417,656,270.78 - Step 5: Solve for x
x = 7,417,656,270.78/71,695.40 - Step 6: Final answer
x = 103,460.70
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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.