Finding the Fourth Proportional to 75,831.56, 104,681.10 and 48,987.14
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Solution
The fourth proportional to 75,831.56, 104,681.10 and 48,987.14 is: 67,623.92
Step by Step Solution
- Step 1: Write the proportion equation
75,831.56 : 104,681.10 = 48,987.14 : x - Step 2: Convert to fraction form
75,831.56/104,681.10 = 48,987.14/x - Step 3: Cross multiply
75,831.56x = 104,681.10 × 48,987.14 - Step 4: Simplify right side
75,831.56x = 5,128,027,701.05 - Step 5: Solve for x
x = 5,128,027,701.05/75,831.56 - Step 6: Final answer
x = 67,623.92
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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.