Finding the Fourth Proportional to 74,606.29, 111,909.59 and 61,430.99
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Solution
The fourth proportional to 74,606.29, 111,909.59 and 61,430.99 is: 92,146.60
Step by Step Solution
- Step 1: Write the proportion equation
74,606.29 : 111,909.59 = 61,430.99 : x - Step 2: Convert to fraction form
74,606.29/111,909.59 = 61,430.99/x - Step 3: Cross multiply
74,606.29x = 111,909.59 × 61,430.99 - Step 4: Simplify right side
74,606.29x = 6,874,716,267.86 - Step 5: Solve for x
x = 6,874,716,267.86/74,606.29 - Step 6: Final answer
x = 92,146.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.