Finding the Fourth Proportional to 100,319,643.74, 138,441,598.73 and 56,268,996.80
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Solution
The fourth proportional to 100,319,643.74, 138,441,598.73 and 56,268,996.80 is: 77,651,490.63
Step by Step Solution
- Step 1: Write the proportion equation
100,319,643.74 : 138,441,598.73 = 56,268,996.80 : x - Step 2: Convert to fraction form
100,319,643.74/138,441,598.73 = 56,268,996.80/x - Step 3: Cross multiply
100,319,643.74x = 138,441,598.73 × 56,268,996.80 - Step 4: Simplify right side
100,319,643.74x = 7,789,969,875,925,253 - Step 5: Solve for x
x = 7,789,969,875,925,253/100,319,643.74 - Step 6: Final answer
x = 77,651,490.63
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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.