Finding the Fourth Proportional to 38,700,319.32, 53,405,101.44 and 21,295,036.08
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Solution
The fourth proportional to 38,700,319.32, 53,405,101.44 and 21,295,036.08 is: 29,386,412.88
Step by Step Solution
- Step 1: Write the proportion equation
38,700,319.32 : 53,405,101.44 = 21,295,036.08 : x - Step 2: Convert to fraction form
38,700,319.32/53,405,101.44 = 21,295,036.08/x - Step 3: Cross multiply
38,700,319.32x = 53,405,101.44 × 21,295,036.08 - Step 4: Simplify right side
38,700,319.32x = 1,137,263,562,020,859.75 - Step 5: Solve for x
x = 1,137,263,562,020,859.75/38,700,319.32 - Step 6: Final answer
x = 29,386,412.88
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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.