Finding the Fourth Proportional to 87,959.04, 121,315.68 and 61,101.12
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Solution
The fourth proportional to 87,959.04, 121,315.68 and 61,101.12 is: 84,272.45
Step by Step Solution
- Step 1: Write the proportion equation
87,959.04 : 121,315.68 = 61,101.12 : x - Step 2: Convert to fraction form
87,959.04/121,315.68 = 61,101.12/x - Step 3: Cross multiply
87,959.04x = 121,315.68 × 61,101.12 - Step 4: Simplify right side
87,959.04x = 7,412,523,921.56 - Step 5: Solve for x
x = 7,412,523,921.56/87,959.04 - Step 6: Final answer
x = 84,272.45
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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.