Finding the Fourth Proportional to 76,722,649.07, 115,156,731.06 and 47,488,056.09
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Solution
The fourth proportional to 76,722,649.07, 115,156,731.06 and 47,488,056.09 is: 71,277,117.90
Step by Step Solution
- Step 1: Write the proportion equation
76,722,649.07 : 115,156,731.06 = 47,488,056.09 : x - Step 2: Convert to fraction form
76,722,649.07/115,156,731.06 = 47,488,056.09/x - Step 3: Cross multiply
76,722,649.07x = 115,156,731.06 × 47,488,056.09 - Step 4: Simplify right side
76,722,649.07x = 5,468,569,303,718,326 - Step 5: Solve for x
x = 5,468,569,303,718,326/76,722,649.07 - Step 6: Final answer
x = 71,277,117.90
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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.