Finding the Fourth Proportional to 100,319,644.99, 138,441,600.45 and 56,268,998.05
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Solution
The fourth proportional to 100,319,644.99, 138,441,600.45 and 56,268,998.05 is: 77,651,492.35
Step by Step Solution
- Step 1: Write the proportion equation
100,319,644.99 : 138,441,600.45 = 56,268,998.05 : x - Step 2: Convert to fraction form
100,319,644.99/138,441,600.45 = 56,268,998.05/x - Step 3: Cross multiply
100,319,644.99x = 138,441,600.45 × 56,268,998.05 - Step 4: Simplify right side
100,319,644.99x = 7,789,970,145,759,928 - Step 5: Solve for x
x = 7,789,970,145,759,928/100,319,644.99 - Step 6: Final answer
x = 77,651,492.35
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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.