Finding the Fourth Proportional to 78,251.87, 107,970.95 and 46,431.11
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Solution
The fourth proportional to 78,251.87, 107,970.95 and 46,431.11 is: 64,065.06
Step by Step Solution
- Step 1: Write the proportion equation
78,251.87 : 107,970.95 = 46,431.11 : x - Step 2: Convert to fraction form
78,251.87/107,970.95 = 46,431.11/x - Step 3: Cross multiply
78,251.87x = 107,970.95 × 46,431.11 - Step 4: Simplify right side
78,251.87x = 5,013,210,284.24 - Step 5: Solve for x
x = 5,013,210,284.24/78,251.87 - Step 6: Final answer
x = 64,065.06
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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.