Finding the Fourth Proportional to 69,187.41, 103,781.19 and 19,267.62
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Solution
The fourth proportional to 69,187.41, 103,781.19 and 19,267.62 is: 28,901.45
Step by Step Solution
- Step 1: Write the proportion equation
69,187.41 : 103,781.19 = 19,267.62 : x - Step 2: Convert to fraction form
69,187.41/103,781.19 = 19,267.62/x - Step 3: Cross multiply
69,187.41x = 103,781.19 × 19,267.62 - Step 4: Simplify right side
69,187.41x = 1,999,616,532.07 - Step 5: Solve for x
x = 1,999,616,532.07/69,187.41 - Step 6: Final answer
x = 28,901.45
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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.