Finding the Fourth Proportional to 28,569,641.76, 39,419,971.92 and 16,971,115.68
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Solution
The fourth proportional to 28,569,641.76, 39,419,971.92 and 16,971,115.68 is: 23,416,496.05
Step by Step Solution
- Step 1: Write the proportion equation
28,569,641.76 : 39,419,971.92 = 16,971,115.68 : x - Step 2: Convert to fraction form
28,569,641.76/39,419,971.92 = 16,971,115.68/x - Step 3: Cross multiply
28,569,641.76x = 39,419,971.92 × 16,971,115.68 - Step 4: Simplify right side
28,569,641.76x = 669,000,903,556,671.75 - Step 5: Solve for x
x = 669,000,903,556,671.75/28,569,641.76 - Step 6: Final answer
x = 23,416,496.05
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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.