Finding the Fourth Proportional to 75,320.16, 112,979.74 and 19,159.79
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Solution
The fourth proportional to 75,320.16, 112,979.74 and 19,159.79 is: 28,739.55
Step by Step Solution
- Step 1: Write the proportion equation
75,320.16 : 112,979.74 = 19,159.79 : x - Step 2: Convert to fraction form
75,320.16/112,979.74 = 19,159.79/x - Step 3: Cross multiply
75,320.16x = 112,979.74 × 19,159.79 - Step 4: Simplify right side
75,320.16x = 2,164,667,527.76 - Step 5: Solve for x
x = 2,164,667,527.76/75,320.16 - Step 6: Final answer
x = 28,739.55
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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.