Finding the Fourth Proportional to 74,931.21, 103,378.14 and 48,088.49
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Solution
The fourth proportional to 74,931.21, 103,378.14 and 48,088.49 is: 66,344.83
Step by Step Solution
- Step 1: Write the proportion equation
74,931.21 : 103,378.14 = 48,088.49 : x - Step 2: Convert to fraction form
74,931.21/103,378.14 = 48,088.49/x - Step 3: Cross multiply
74,931.21x = 103,378.14 × 48,088.49 - Step 4: Simplify right side
74,931.21x = 4,971,298,134.72 - Step 5: Solve for x
x = 4,971,298,134.72/74,931.21 - Step 6: Final answer
x = 66,344.83
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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.