Finding the Fourth Proportional to 90,072.89, 135,128.63 and 26,897.99
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Solution
The fourth proportional to 90,072.89, 135,128.63 and 26,897.99 is: 40,352.75
Step by Step Solution
- Step 1: Write the proportion equation
90,072.89 : 135,128.63 = 26,897.99 : x - Step 2: Convert to fraction form
90,072.89/135,128.63 = 26,897.99/x - Step 3: Cross multiply
90,072.89x = 135,128.63 × 26,897.99 - Step 4: Simplify right side
90,072.89x = 3,634,688,943.52 - Step 5: Solve for x
x = 3,634,688,943.52/90,072.89 - Step 6: Final answer
x = 40,352.75
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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.