Finding the Fourth Proportional to 78,831.30, 118,246.95 and 68,693.70
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Solution
The fourth proportional to 78,831.30, 118,246.95 and 68,693.70 is: 103,040.55
Step by Step Solution
- Step 1: Write the proportion equation
78,831.30 : 118,246.95 = 68,693.70 : x - Step 2: Convert to fraction form
78,831.30/118,246.95 = 68,693.70/x - Step 3: Cross multiply
78,831.30x = 118,246.95 × 68,693.70 - Step 4: Simplify right side
78,831.30x = 8,122,820,509.22 - Step 5: Solve for x
x = 8,122,820,509.22/78,831.30 - Step 6: Final answer
x = 103,040.55
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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.