Finding the Fourth Proportional to 87,298.29, 130,947.44 and 28,135.08
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Solution
The fourth proportional to 87,298.29, 130,947.44 and 28,135.08 is: 42,202.62
Step by Step Solution
- Step 1: Write the proportion equation
87,298.29 : 130,947.44 = 28,135.08 : x - Step 2: Convert to fraction form
87,298.29/130,947.44 = 28,135.08/x - Step 3: Cross multiply
87,298.29x = 130,947.44 × 28,135.08 - Step 4: Simplify right side
87,298.29x = 3,684,216,559.52 - Step 5: Solve for x
x = 3,684,216,559.52/87,298.29 - Step 6: Final answer
x = 42,202.62
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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.