Finding the Fourth Proportional to 90,794.64, 136,191.96 and 28,470
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Solution
The fourth proportional to 90,794.64, 136,191.96 and 28,470 is: 42,705
Step by Step Solution
- Step 1: Write the proportion equation
90,794.64 : 136,191.96 = 28,470 : x - Step 2: Convert to fraction form
90,794.64/136,191.96 = 28,470/x - Step 3: Cross multiply
90,794.64x = 136,191.96 × 28,470 - Step 4: Simplify right side
90,794.64x = 3,877,385,101.20 - Step 5: Solve for x
x = 3,877,385,101.20/90,794.64 - Step 6: Final answer
x = 42,705
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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.