Finding the Fourth Proportional to 85,465.19, 128,209.93 and 26,305.79
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Solution
The fourth proportional to 85,465.19, 128,209.93 and 26,305.79 is: 39,462.42
Step by Step Solution
- Step 1: Write the proportion equation
85,465.19 : 128,209.93 = 26,305.79 : x - Step 2: Convert to fraction form
85,465.19/128,209.93 = 26,305.79/x - Step 3: Cross multiply
85,465.19x = 128,209.93 × 26,305.79 - Step 4: Simplify right side
85,465.19x = 3,372,662,721.92 - Step 5: Solve for x
x = 3,372,662,721.92/85,465.19 - Step 6: Final answer
x = 39,462.42
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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.