Finding the Fourth Proportional to 93,831.63, 129,487.64 and 51,391.68
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Solution
The fourth proportional to 93,831.63, 129,487.64 and 51,391.68 is: 70,920.51
Step by Step Solution
- Step 1: Write the proportion equation
93,831.63 : 129,487.64 = 51,391.68 : x - Step 2: Convert to fraction form
93,831.63/129,487.64 = 51,391.68/x - Step 3: Cross multiply
93,831.63x = 129,487.64 × 51,391.68 - Step 4: Simplify right side
93,831.63x = 6,654,587,358.84 - Step 5: Solve for x
x = 6,654,587,358.84/93,831.63 - Step 6: Final answer
x = 70,920.51
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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.