Finding the Fourth Proportional to 81,262,552.05, 121,893,828.08 and 38,215,831.05
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Solution
The fourth proportional to 81,262,552.05, 121,893,828.08 and 38,215,831.05 is: 57,323,746.58
Step by Step Solution
- Step 1: Write the proportion equation
81,262,552.05 : 121,893,828.08 = 38,215,831.05 : x - Step 2: Convert to fraction form
81,262,552.05/121,893,828.08 = 38,215,831.05/x - Step 3: Cross multiply
81,262,552.05x = 121,893,828.08 × 38,215,831.05 - Step 4: Simplify right side
81,262,552.05x = 4,658,273,939,751,946 - Step 5: Solve for x
x = 4,658,273,939,751,946/81,262,552.05 - Step 6: Final answer
x = 57,323,746.58
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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.