Finding the Fourth Proportional to 74,950.22, 103,421.35 and 48,129.06
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Solution
The fourth proportional to 74,950.22, 103,421.35 and 48,129.06 is: 66,411.71
Step by Step Solution
- Step 1: Write the proportion equation
74,950.22 : 103,421.35 = 48,129.06 : x - Step 2: Convert to fraction form
74,950.22/103,421.35 = 48,129.06/x - Step 3: Cross multiply
74,950.22x = 103,421.35 × 48,129.06 - Step 4: Simplify right side
74,950.22x = 4,977,572,359.43 - Step 5: Solve for x
x = 4,977,572,359.43/74,950.22 - Step 6: Final answer
x = 66,411.71
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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.