Finding the Fourth Proportional to 73,920.20, 102,010.19 and 40,386.20
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Solution
The fourth proportional to 73,920.20, 102,010.19 and 40,386.20 is: 55,733.12
Step by Step Solution
- Step 1: Write the proportion equation
73,920.20 : 102,010.19 = 40,386.20 : x - Step 2: Convert to fraction form
73,920.20/102,010.19 = 40,386.20/x - Step 3: Cross multiply
73,920.20x = 102,010.19 × 40,386.20 - Step 4: Simplify right side
73,920.20x = 4,119,803,223.40 - Step 5: Solve for x
x = 4,119,803,223.40/73,920.20 - Step 6: Final answer
x = 55,733.12
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.