Finding the Fourth Proportional to 76,785.64, 105,962.58 and 42,793.99
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Solution
The fourth proportional to 76,785.64, 105,962.58 and 42,793.99 is: 59,054.81
Step by Step Solution
- Step 1: Write the proportion equation
76,785.64 : 105,962.58 = 42,793.99 : x - Step 2: Convert to fraction form
76,785.64/105,962.58 = 42,793.99/x - Step 3: Cross multiply
76,785.64x = 105,962.58 × 42,793.99 - Step 4: Simplify right side
76,785.64x = 4,534,561,323.99 - Step 5: Solve for x
x = 4,534,561,323.99/76,785.64 - Step 6: Final answer
x = 59,054.81
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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.