Finding the Fourth Proportional to 76,925.99, 106,060.64 and 65,429.66
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Solution
The fourth proportional to 76,925.99, 106,060.64 and 65,429.66 is: 90,210.23
Step by Step Solution
- Step 1: Write the proportion equation
76,925.99 : 106,060.64 = 65,429.66 : x - Step 2: Convert to fraction form
76,925.99/106,060.64 = 65,429.66/x - Step 3: Cross multiply
76,925.99x = 106,060.64 × 65,429.66 - Step 4: Simplify right side
76,925.99x = 6,939,510,757.13 - Step 5: Solve for x
x = 6,939,510,757.13/76,925.99 - Step 6: Final answer
x = 90,210.23
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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.