Finding the Fourth Proportional to 29,780,135.60, 41,122,135.80 and 28,817,155.76
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Solution
The fourth proportional to 29,780,135.60, 41,122,135.80 and 28,817,155.76 is: 39,792,397.47
Step by Step Solution
- Step 1: Write the proportion equation
29,780,135.60 : 41,122,135.80 = 28,817,155.76 : x - Step 2: Convert to fraction form
29,780,135.60/41,122,135.80 = 28,817,155.76/x - Step 3: Cross multiply
29,780,135.60x = 41,122,135.80 × 28,817,155.76 - Step 4: Simplify right side
29,780,135.60x = 1,185,022,992,532,472.25 - Step 5: Solve for x
x = 1,185,022,992,532,472.25/29,780,135.60 - Step 6: Final answer
x = 39,792,397.47
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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.