Finding the Fourth Proportional to 92,831.13, 128,113.28 and 52,544.74
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Solution
The fourth proportional to 92,831.13, 128,113.28 and 52,544.74 is: 72,515.32
Step by Step Solution
- Step 1: Write the proportion equation
92,831.13 : 128,113.28 = 52,544.74 : x - Step 2: Convert to fraction form
92,831.13/128,113.28 = 52,544.74/x - Step 3: Cross multiply
92,831.13x = 128,113.28 × 52,544.74 - Step 4: Simplify right side
92,831.13x = 6,731,678,988.15 - Step 5: Solve for x
x = 6,731,678,988.15/92,831.13 - Step 6: Final answer
x = 72,515.32
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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.