Finding the Fourth Proportional to 99,029.28, 136,679.28 and 77,476.08
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Solution
The fourth proportional to 99,029.28, 136,679.28 and 77,476.08 is: 106,931.76
Step by Step Solution
- Step 1: Write the proportion equation
99,029.28 : 136,679.28 = 77,476.08 : x - Step 2: Convert to fraction form
99,029.28/136,679.28 = 77,476.08/x - Step 3: Cross multiply
99,029.28x = 136,679.28 × 77,476.08 - Step 4: Simplify right side
99,029.28x = 10,589,374,831.62 - Step 5: Solve for x
x = 10,589,374,831.62/99,029.28 - Step 6: Final answer
x = 106,931.76
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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.