Finding the Fourth Proportional to 87,090.07, 120,188.57 and 51,291.62
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Solution
The fourth proportional to 87,090.07, 120,188.57 and 51,291.62 is: 70,784.95
Step by Step Solution
- Step 1: Write the proportion equation
87,090.07 : 120,188.57 = 51,291.62 : x - Step 2: Convert to fraction form
87,090.07/120,188.57 = 51,291.62/x - Step 3: Cross multiply
87,090.07x = 120,188.57 × 51,291.62 - Step 4: Simplify right side
87,090.07x = 6,164,666,460.78 - Step 5: Solve for x
x = 6,164,666,460.78/87,090.07 - Step 6: Final answer
x = 70,784.95
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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.