Finding the Fourth Proportional to 77,245.02, 106,543.06 and 70,892.09
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Solution
The fourth proportional to 77,245.02, 106,543.06 and 70,892.09 is: 97,780.55
Step by Step Solution
- Step 1: Write the proportion equation
77,245.02 : 106,543.06 = 70,892.09 : x - Step 2: Convert to fraction form
77,245.02/106,543.06 = 70,892.09/x - Step 3: Cross multiply
77,245.02x = 106,543.06 × 70,892.09 - Step 4: Simplify right side
77,245.02x = 7,553,060,586.41 - Step 5: Solve for x
x = 7,553,060,586.41/77,245.02 - Step 6: Final answer
x = 97,780.55
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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.