Finding the Fourth Proportional to 77,764.19, 107,314.47 and 45,520.99
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Solution
The fourth proportional to 77,764.19, 107,314.47 and 45,520.99 is: 62,818.90
Step by Step Solution
- Step 1: Write the proportion equation
77,764.19 : 107,314.47 = 45,520.99 : x - Step 2: Convert to fraction form
77,764.19/107,314.47 = 45,520.99/x - Step 3: Cross multiply
77,764.19x = 107,314.47 × 45,520.99 - Step 4: Simplify right side
77,764.19x = 4,885,060,647.44 - Step 5: Solve for x
x = 4,885,060,647.44/77,764.19 - Step 6: Final answer
x = 62,818.90
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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.