Finding the Fourth Proportional to 78,251.13, 107,989.01 and 44,258.95
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Solution
The fourth proportional to 78,251.13, 107,989.01 and 44,258.95 is: 61,078.74
Step by Step Solution
- Step 1: Write the proportion equation
78,251.13 : 107,989.01 = 44,258.95 : x - Step 2: Convert to fraction form
78,251.13/107,989.01 = 44,258.95/x - Step 3: Cross multiply
78,251.13x = 107,989.01 × 44,258.95 - Step 4: Simplify right side
78,251.13x = 4,779,480,301.18 - Step 5: Solve for x
x = 4,779,480,301.18/78,251.13 - Step 6: Final answer
x = 61,078.74
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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.