Finding the Fourth Proportional to 39,929,460.18, 55,102,691.79 and 21,594,745.68
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Solution
The fourth proportional to 39,929,460.18, 55,102,691.79 and 21,594,745.68 is: 29,800,768.91
Step by Step Solution
- Step 1: Write the proportion equation
39,929,460.18 : 55,102,691.79 = 21,594,745.68 : x - Step 2: Convert to fraction form
39,929,460.18/55,102,691.79 = 21,594,745.68/x - Step 3: Cross multiply
39,929,460.18x = 55,102,691.79 × 21,594,745.68 - Step 4: Simplify right side
39,929,460.18x = 1,189,928,615,488,474 - Step 5: Solve for x
x = 1,189,928,615,488,474/39,929,460.18 - Step 6: Final answer
x = 29,800,768.91
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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.