Finding the Fourth Proportional to 38,660,429.68, 53,349,958.08 and 21,255,739.36
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Solution
The fourth proportional to 38,660,429.68, 53,349,958.08 and 21,255,739.36 is: 29,332,131.41
Step by Step Solution
- Step 1: Write the proportion equation
38,660,429.68 : 53,349,958.08 = 21,255,739.36 : x - Step 2: Convert to fraction form
38,660,429.68/53,349,958.08 = 21,255,739.36/x - Step 3: Cross multiply
38,660,429.68x = 53,349,958.08 × 21,255,739.36 - Step 4: Simplify right side
38,660,429.68x = 1,133,992,803,815,406 - Step 5: Solve for x
x = 1,133,992,803,815,406/38,660,429.68 - Step 6: Final answer
x = 29,332,131.41
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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.