Finding the Fourth Proportional to 77,036.87, 106,213.95 and 58,909.75
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Solution
The fourth proportional to 77,036.87, 106,213.95 and 58,909.75 is: 81,221.33
Step by Step Solution
- Step 1: Write the proportion equation
77,036.87 : 106,213.95 = 58,909.75 : x - Step 2: Convert to fraction form
77,036.87/106,213.95 = 58,909.75/x - Step 3: Cross multiply
77,036.87x = 106,213.95 × 58,909.75 - Step 4: Simplify right side
77,036.87x = 6,257,036,975.48 - Step 5: Solve for x
x = 6,257,036,975.48/77,036.87 - Step 6: Final answer
x = 81,221.33
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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.