Finding the Fourth Proportional to 38,648,898.96, 53,336,143.20 and 21,245,977.68
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Solution
The fourth proportional to 38,648,898.96, 53,336,143.20 and 21,245,977.68 is: 29,319,813.46
Step by Step Solution
- Step 1: Write the proportion equation
38,648,898.96 : 53,336,143.20 = 21,245,977.68 : x - Step 2: Convert to fraction form
38,648,898.96/53,336,143.20 = 21,245,977.68/x - Step 3: Cross multiply
38,648,898.96x = 53,336,143.20 × 21,245,977.68 - Step 4: Simplify right side
38,648,898.96x = 1,133,178,507,964,483.75 - Step 5: Solve for x
x = 1,133,178,507,964,483.75/38,648,898.96 - Step 6: Final answer
x = 29,319,813.46
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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.