Finding the Fourth Proportional to 84,068,324.78, 115,999,920.50 and 48,778,039.67
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Solution
The fourth proportional to 84,068,324.78, 115,999,920.50 and 48,778,039.67 is: 67,305,358.33
Step by Step Solution
- Step 1: Write the proportion equation
84,068,324.78 : 115,999,920.50 = 48,778,039.67 : x - Step 2: Convert to fraction form
84,068,324.78/115,999,920.50 = 48,778,039.67/x - Step 3: Cross multiply
84,068,324.78x = 115,999,920.50 × 48,778,039.67 - Step 4: Simplify right side
84,068,324.78x = 5,658,248,723,041,957 - Step 5: Solve for x
x = 5,658,248,723,041,957/84,068,324.78 - Step 6: Final answer
x = 67,305,358.33
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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.