Finding the Fourth Proportional to 89,894,989.92, 124,138,915.96 and 66,165,484.24
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Solution
The fourth proportional to 89,894,989.92, 124,138,915.96 and 66,165,484.24 is: 91,370,069.62
Step by Step Solution
- Step 1: Write the proportion equation
89,894,989.92 : 124,138,915.96 = 66,165,484.24 : x - Step 2: Convert to fraction form
89,894,989.92/124,138,915.96 = 66,165,484.24/x - Step 3: Cross multiply
89,894,989.92x = 124,138,915.96 × 66,165,484.24 - Step 4: Simplify right side
89,894,989.92x = 8,213,711,487,522,064 - Step 5: Solve for x
x = 8,213,711,487,522,064/89,894,989.92 - Step 6: Final answer
x = 91,370,069.62
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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.