Finding the Fourth Proportional to 93,573.36, 128,831.94 and 75,727.44
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Solution
The fourth proportional to 93,573.36, 128,831.94 and 75,727.44 is: 104,261.65
Step by Step Solution
- Step 1: Write the proportion equation
93,573.36 : 128,831.94 = 75,727.44 : x - Step 2: Convert to fraction form
93,573.36/128,831.94 = 75,727.44/x - Step 3: Cross multiply
93,573.36x = 128,831.94 × 75,727.44 - Step 4: Simplify right side
93,573.36x = 9,756,113,006.43 - Step 5: Solve for x
x = 9,756,113,006.43/93,573.36 - Step 6: Final answer
x = 104,261.65
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1.5x scale
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.