Finding the Fourth Proportional to 87,840,728.24, 121,220,216.47 and 48,685,032.95
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Solution
The fourth proportional to 87,840,728.24, 121,220,216.47 and 48,685,032.95 is: 67,185,351.85
Step by Step Solution
- Step 1: Write the proportion equation
87,840,728.24 : 121,220,216.47 = 48,685,032.95 : x - Step 2: Convert to fraction form
87,840,728.24/121,220,216.47 = 48,685,032.95/x - Step 3: Cross multiply
87,840,728.24x = 121,220,216.47 × 48,685,032.95 - Step 4: Simplify right side
87,840,728.24x = 5,901,610,233,411,989 - Step 5: Solve for x
x = 5,901,610,233,411,989/87,840,728.24 - Step 6: Final answer
x = 67,185,351.85
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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.