Finding the Fourth Proportional to 71,201.70, 106,802.55 and 61,985.70
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Solution
The fourth proportional to 71,201.70, 106,802.55 and 61,985.70 is: 92,978.55
Step by Step Solution
- Step 1: Write the proportion equation
71,201.70 : 106,802.55 = 61,985.70 : x - Step 2: Convert to fraction form
71,201.70/106,802.55 = 61,985.70/x - Step 3: Cross multiply
71,201.70x = 106,802.55 × 61,985.70 - Step 4: Simplify right side
71,201.70x = 6,620,230,823.54 - Step 5: Solve for x
x = 6,620,230,823.54/71,201.70 - Step 6: Final answer
x = 92,978.55
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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.