Finding the Fourth Proportional to 85,372.40, 128,077.80 and 26,210.80
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Solution
The fourth proportional to 85,372.40, 128,077.80 and 26,210.80 is: 39,322.09
Step by Step Solution
- Step 1: Write the proportion equation
85,372.40 : 128,077.80 = 26,210.80 : x - Step 2: Convert to fraction form
85,372.40/128,077.80 = 26,210.80/x - Step 3: Cross multiply
85,372.40x = 128,077.80 × 26,210.80 - Step 4: Simplify right side
85,372.40x = 3,357,021,600.24 - Step 5: Solve for x
x = 3,357,021,600.24/85,372.40 - Step 6: Final answer
x = 39,322.09
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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.