Finding the Fourth Proportional to 77,376.18, 106,779.45 and 43,842.18
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Solution
The fourth proportional to 77,376.18, 106,779.45 and 43,842.18 is: 60,502.39
Step by Step Solution
- Step 1: Write the proportion equation
77,376.18 : 106,779.45 = 43,842.18 : x - Step 2: Convert to fraction form
77,376.18/106,779.45 = 43,842.18/x - Step 3: Cross multiply
77,376.18x = 106,779.45 × 43,842.18 - Step 4: Simplify right side
77,376.18x = 4,681,443,867.20 - Step 5: Solve for x
x = 4,681,443,867.20/77,376.18 - Step 6: Final answer
x = 60,502.39
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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.