Finding the Fourth Proportional to 86,916.40, 130,374.60 and 34,319.05
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Solution
The fourth proportional to 86,916.40, 130,374.60 and 34,319.05 is: 51,478.58
Step by Step Solution
- Step 1: Write the proportion equation
86,916.40 : 130,374.60 = 34,319.05 : x - Step 2: Convert to fraction form
86,916.40/130,374.60 = 34,319.05/x - Step 3: Cross multiply
86,916.40x = 130,374.60 × 34,319.05 - Step 4: Simplify right side
86,916.40x = 4,474,332,416.13 - Step 5: Solve for x
x = 4,474,332,416.13/86,916.40 - Step 6: Final answer
x = 51,478.58
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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.