Finding the Fourth Proportional to 76,955.19, 115,432.85 and 61,471.23
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Solution
The fourth proportional to 76,955.19, 115,432.85 and 61,471.23 is: 92,206.90
Step by Step Solution
- Step 1: Write the proportion equation
76,955.19 : 115,432.85 = 61,471.23 : x - Step 2: Convert to fraction form
76,955.19/115,432.85 = 61,471.23/x - Step 3: Cross multiply
76,955.19x = 115,432.85 × 61,471.23 - Step 4: Simplify right side
76,955.19x = 7,095,799,271.91 - Step 5: Solve for x
x = 7,095,799,271.91/76,955.19 - Step 6: Final answer
x = 92,206.90
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1.5x scale
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.