Finding the Fourth Proportional to 77,881.98, 107,477.55 and 43,890.99
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Solution
The fourth proportional to 77,881.98, 107,477.55 and 43,890.99 is: 60,569.80
Step by Step Solution
- Step 1: Write the proportion equation
77,881.98 : 107,477.55 = 43,890.99 : x - Step 2: Convert to fraction form
77,881.98/107,477.55 = 43,890.99/x - Step 3: Cross multiply
77,881.98x = 107,477.55 × 43,890.99 - Step 4: Simplify right side
77,881.98x = 4,717,295,852.82 - Step 5: Solve for x
x = 4,717,295,852.82/77,881.98 - Step 6: Final answer
x = 60,569.80
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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.