Finding the Fourth Proportional to 77,069.73, 115,606.99 and 20,909.62
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Solution
The fourth proportional to 77,069.73, 115,606.99 and 20,909.62 is: 31,365.08
Step by Step Solution
- Step 1: Write the proportion equation
77,069.73 : 115,606.99 = 20,909.62 : x - Step 2: Convert to fraction form
77,069.73/115,606.99 = 20,909.62/x - Step 3: Cross multiply
77,069.73x = 115,606.99 × 20,909.62 - Step 4: Simplify right side
77,069.73x = 2,417,298,230.24 - Step 5: Solve for x
x = 2,417,298,230.24/77,069.73 - Step 6: Final answer
x = 31,365.08
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.