Finding the Fourth Proportional to 28,331,920.80, 42,497,881.20 and 22,167,205.20
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Solution
The fourth proportional to 28,331,920.80, 42,497,881.20 and 22,167,205.20 is: 33,250,807.80
Step by Step Solution
- Step 1: Write the proportion equation
28,331,920.80 : 42,497,881.20 = 22,167,205.20 : x - Step 2: Convert to fraction form
28,331,920.80/42,497,881.20 = 22,167,205.20/x - Step 3: Cross multiply
28,331,920.80x = 42,497,881.20 × 22,167,205.20 - Step 4: Simplify right side
28,331,920.80x = 942,059,253,125,622.25 - Step 5: Solve for x
x = 942,059,253,125,622.25/28,331,920.80 - Step 6: Final answer
x = 33,250,807.80
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1.5x scale
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.