Finding the Fourth Proportional to 91,178,642.91, 125,826,730.40 and 49,363,148.93
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Solution
The fourth proportional to 91,178,642.91, 125,826,730.40 and 49,363,148.93 is: 68,121,255.52
Step by Step Solution
- Step 1: Write the proportion equation
91,178,642.91 : 125,826,730.40 = 49,363,148.93 : x - Step 2: Convert to fraction form
91,178,642.91/125,826,730.40 = 49,363,148.93/x - Step 3: Cross multiply
91,178,642.91x = 125,826,730.40 × 49,363,148.93 - Step 4: Simplify right side
91,178,642.91x = 6,211,203,631,234,208 - Step 5: Solve for x
x = 6,211,203,631,234,208/91,178,642.91 - Step 6: Final answer
x = 68,121,255.52
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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.