Finding the Fourth Proportional to 77,652.18, 107,126.28 and 49,342.68
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Solution
The fourth proportional to 77,652.18, 107,126.28 and 49,342.68 is: 68,071.47
Step by Step Solution
- Step 1: Write the proportion equation
77,652.18 : 107,126.28 = 49,342.68 : x - Step 2: Convert to fraction form
77,652.18/107,126.28 = 49,342.68/x - Step 3: Cross multiply
77,652.18x = 107,126.28 × 49,342.68 - Step 4: Simplify right side
77,652.18x = 5,285,897,753.63 - Step 5: Solve for x
x = 5,285,897,753.63/77,652.18 - Step 6: Final answer
x = 68,071.47
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1.5x scale
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.