Finding the Fourth Proportional to 74,461.16, 102,780.35 and 47,675.81
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Solution
The fourth proportional to 74,461.16, 102,780.35 and 47,675.81 is: 65,807.95
Step by Step Solution
- Step 1: Write the proportion equation
74,461.16 : 102,780.35 = 47,675.81 : x - Step 2: Convert to fraction form
74,461.16/102,780.35 = 47,675.81/x - Step 3: Cross multiply
74,461.16x = 102,780.35 × 47,675.81 - Step 4: Simplify right side
74,461.16x = 4,900,135,686.05 - Step 5: Solve for x
x = 4,900,135,686.05/74,461.16 - Step 6: Final answer
x = 65,807.95
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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.