Finding the Fourth Proportional to 25,120,201.70, 37,680,302.55 and 18,742,909.70
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Solution
The fourth proportional to 25,120,201.70, 37,680,302.55 and 18,742,909.70 is: 28,114,364.55
Step by Step Solution
- Step 1: Write the proportion equation
25,120,201.70 : 37,680,302.55 = 18,742,909.70 : x - Step 2: Convert to fraction form
25,120,201.70/37,680,302.55 = 18,742,909.70/x - Step 3: Cross multiply
25,120,201.70x = 37,680,302.55 × 18,742,909.70 - Step 4: Simplify right side
25,120,201.70x = 706,238,508,163,329.62 - Step 5: Solve for x
x = 706,238,508,163,329.62/25,120,201.70 - Step 6: Final answer
x = 28,114,364.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.