Finding the Fourth Proportional to 100,063,398.23, 138,088,899.80 and 57,653,518.98
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Solution
The fourth proportional to 100,063,398.23, 138,088,899.80 and 57,653,518.98 is: 79,562,668.73
Step by Step Solution
- Step 1: Write the proportion equation
100,063,398.23 : 138,088,899.80 = 57,653,518.98 : x - Step 2: Convert to fraction form
100,063,398.23/138,088,899.80 = 57,653,518.98/x - Step 3: Cross multiply
100,063,398.23x = 138,088,899.80 × 57,653,518.98 - Step 4: Simplify right side
100,063,398.23x = 7,961,311,005,258,349 - Step 5: Solve for x
x = 7,961,311,005,258,349/100,063,398.23 - Step 6: Final answer
x = 79,562,668.73
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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.