Finding the Fourth Proportional to 78,319.71, 117,497.79 and 25,726.01
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Solution
The fourth proportional to 78,319.71, 117,497.79 and 25,726.01 is: 38,594.99
Step by Step Solution
- Step 1: Write the proportion equation
78,319.71 : 117,497.79 = 25,726.01 : x - Step 2: Convert to fraction form
78,319.71/117,497.79 = 25,726.01/x - Step 3: Cross multiply
78,319.71x = 117,497.79 × 25,726.01 - Step 4: Simplify right side
78,319.71x = 3,022,748,733.03 - Step 5: Solve for x
x = 3,022,748,733.03/78,319.71 - Step 6: Final answer
x = 38,594.99
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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.