Finding the Fourth Proportional to 77,124.36, 115,366.64 and 72,400.44
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Solution
The fourth proportional to 77,124.36, 115,366.64 and 72,400.44 is: 108,300.35
Step by Step Solution
- Step 1: Write the proportion equation
77,124.36 : 115,366.64 = 72,400.44 : x - Step 2: Convert to fraction form
77,124.36/115,366.64 = 72,400.44/x - Step 3: Cross multiply
77,124.36x = 115,366.64 × 72,400.44 - Step 4: Simplify right side
77,124.36x = 8,352,595,497.32 - Step 5: Solve for x
x = 8,352,595,497.32/77,124.36 - Step 6: Final answer
x = 108,300.35
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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.