Finding the Fourth Proportional to 81,345.32, 121,989.42 and 24,402.26
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Solution
The fourth proportional to 81,345.32, 121,989.42 and 24,402.26 is: 36,594.82
Step by Step Solution
- Step 1: Write the proportion equation
81,345.32 : 121,989.42 = 24,402.26 : x - Step 2: Convert to fraction form
81,345.32/121,989.42 = 24,402.26/x - Step 3: Cross multiply
81,345.32x = 121,989.42 × 24,402.26 - Step 4: Simplify right side
81,345.32x = 2,976,817,544.09 - Step 5: Solve for x
x = 2,976,817,544.09/81,345.32 - Step 6: Final answer
x = 36,594.82
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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.