Finding the Fourth Proportional to 81,225.69, 121,698.08 and 57,492.99
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Solution
The fourth proportional to 81,225.69, 121,698.08 and 57,492.99 is: 86,140.07
Step by Step Solution
- Step 1: Write the proportion equation
81,225.69 : 121,698.08 = 57,492.99 : x - Step 2: Convert to fraction form
81,225.69/121,698.08 = 57,492.99/x - Step 3: Cross multiply
81,225.69x = 121,698.08 × 57,492.99 - Step 4: Simplify right side
81,225.69x = 6,996,786,424.59 - Step 5: Solve for x
x = 6,996,786,424.59/81,225.69 - Step 6: Final answer
x = 86,140.07
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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.