Finding the Fourth Proportional to 75,904.40, 104,756.95 and 63,135.05
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Solution
The fourth proportional to 75,904.40, 104,756.95 and 63,135.05 is: 87,133.75
Step by Step Solution
- Step 1: Write the proportion equation
75,904.40 : 104,756.95 = 63,135.05 : x - Step 2: Convert to fraction form
75,904.40/104,756.95 = 63,135.05/x - Step 3: Cross multiply
75,904.40x = 104,756.95 × 63,135.05 - Step 4: Simplify right side
75,904.40x = 6,613,835,276.10 - Step 5: Solve for x
x = 6,613,835,276.10/75,904.40 - Step 6: Final answer
x = 87,133.75
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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.