Finding the Fourth Proportional to 87,389.19, 130,992.93 and 59,311.53
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Solution
The fourth proportional to 87,389.19, 130,992.93 and 59,311.53 is: 88,905.63
Step by Step Solution
- Step 1: Write the proportion equation
87,389.19 : 130,992.93 = 59,311.53 : x - Step 2: Convert to fraction form
87,389.19/130,992.93 = 59,311.53/x - Step 3: Cross multiply
87,389.19x = 130,992.93 × 59,311.53 - Step 4: Simplify right side
87,389.19x = 7,769,391,097.48 - Step 5: Solve for x
x = 7,769,391,097.48/87,389.19 - Step 6: Final answer
x = 88,905.63
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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.