Finding the Fourth Proportional to 139,885.43, 209,828.16 and 40,045.99
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Solution
The fourth proportional to 139,885.43, 209,828.16 and 40,045.99 is: 60,068.99
Step by Step Solution
- Step 1: Write the proportion equation
139,885.43 : 209,828.16 = 40,045.99 : x - Step 2: Convert to fraction form
139,885.43/209,828.16 = 40,045.99/x - Step 3: Cross multiply
139,885.43x = 209,828.16 × 40,045.99 - Step 4: Simplify right side
139,885.43x = 8,402,776,397.08 - Step 5: Solve for x
x = 8,402,776,397.08/139,885.43 - Step 6: Final answer
x = 60,068.99
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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.