Finding the Fourth Proportional to 81,113.46, 111,935.40 and 45,303.99
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Solution
The fourth proportional to 81,113.46, 111,935.40 and 45,303.99 is: 62,518.85
Step by Step Solution
- Step 1: Write the proportion equation
81,113.46 : 111,935.40 = 45,303.99 : x - Step 2: Convert to fraction form
81,113.46/111,935.40 = 45,303.99/x - Step 3: Cross multiply
81,113.46x = 111,935.40 × 45,303.99 - Step 4: Simplify right side
81,113.46x = 5,071,120,242.25 - Step 5: Solve for x
x = 5,071,120,242.25/81,113.46 - Step 6: Final answer
x = 62,518.85
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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.