Finding the Fourth Proportional to 77,727.23, 115,984.63 and 69,349.65
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Solution
The fourth proportional to 77,727.23, 115,984.63 and 69,349.65 is: 103,483.60
Step by Step Solution
- Step 1: Write the proportion equation
77,727.23 : 115,984.63 = 69,349.65 : x - Step 2: Convert to fraction form
77,727.23/115,984.63 = 69,349.65/x - Step 3: Cross multiply
77,727.23x = 115,984.63 × 69,349.65 - Step 4: Simplify right side
77,727.23x = 8,043,493,409.95 - Step 5: Solve for x
x = 8,043,493,409.95/77,727.23 - Step 6: Final answer
x = 103,483.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.