Finding the Fourth Proportional to 87,810.84, 121,146.35 and 57,612.96
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Solution
The fourth proportional to 87,810.84, 121,146.35 and 57,612.96 is: 79,484.49
Step by Step Solution
- Step 1: Write the proportion equation
87,810.84 : 121,146.35 = 57,612.96 : x - Step 2: Convert to fraction form
87,810.84/121,146.35 = 57,612.96/x - Step 3: Cross multiply
87,810.84x = 121,146.35 × 57,612.96 - Step 4: Simplify right side
87,810.84x = 6,979,599,528.63 - Step 5: Solve for x
x = 6,979,599,528.63/87,810.84 - Step 6: Final answer
x = 79,484.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.