Finding the Fourth Proportional to 51,247,468.80, 70,720,905.60 and 28,042,329.60
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Solution
The fourth proportional to 51,247,468.80, 70,720,905.60 and 28,042,329.60 is: 38,698,085.80
Step by Step Solution
- Step 1: Write the proportion equation
51,247,468.80 : 70,720,905.60 = 28,042,329.60 : x - Step 2: Convert to fraction form
51,247,468.80/70,720,905.60 = 28,042,329.60/x - Step 3: Cross multiply
51,247,468.80x = 70,720,905.60 × 28,042,329.60 - Step 4: Simplify right side
51,247,468.80x = 1,983,178,944,445,685.75 - Step 5: Solve for x
x = 1,983,178,944,445,685.75/51,247,468.80 - Step 6: Final answer
x = 38,698,085.80
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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.