Finding the Fourth Proportional to 77,508.18, 106,916.10 and 48,816.60
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Solution
The fourth proportional to 77,508.18, 106,916.10 and 48,816.60 is: 67,338.45
Step by Step Solution
- Step 1: Write the proportion equation
77,508.18 : 106,916.10 = 48,816.60 : x - Step 2: Convert to fraction form
77,508.18/106,916.10 = 48,816.60/x - Step 3: Cross multiply
77,508.18x = 106,916.10 × 48,816.60 - Step 4: Simplify right side
77,508.18x = 5,219,280,487.26 - Step 5: Solve for x
x = 5,219,280,487.26/77,508.18 - Step 6: Final answer
x = 67,338.45
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1.5x scale
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.