Finding the Fourth Proportional to 77,883.63, 107,479.51 and 42,073.63
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Solution
The fourth proportional to 77,883.63, 107,479.51 and 42,073.63 is: 58,061.66
Step by Step Solution
- Step 1: Write the proportion equation
77,883.63 : 107,479.51 = 42,073.63 : x - Step 2: Convert to fraction form
77,883.63/107,479.51 = 42,073.63/x - Step 3: Cross multiply
77,883.63x = 107,479.51 × 42,073.63 - Step 4: Simplify right side
77,883.63x = 4,522,052,762.44 - Step 5: Solve for x
x = 4,522,052,762.44/77,883.63 - Step 6: Final answer
x = 58,061.66
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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.