Finding the Fourth Proportional to 100,346.24, 138,482.06 and 57,332.81
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Solution
The fourth proportional to 100,346.24, 138,482.06 and 57,332.81 is: 79,121.70
Step by Step Solution
- Step 1: Write the proportion equation
100,346.24 : 138,482.06 = 57,332.81 : x - Step 2: Convert to fraction form
100,346.24/138,482.06 = 57,332.81/x - Step 3: Cross multiply
100,346.24x = 138,482.06 × 57,332.81 - Step 4: Simplify right side
100,346.24x = 7,939,565,693.93 - Step 5: Solve for x
x = 7,939,565,693.93/100,346.24 - Step 6: Final answer
x = 79,121.70
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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.