Finding the Fourth Proportional to 88,378.12, 121,959.35 and 48,090.95
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Solution
The fourth proportional to 88,378.12, 121,959.35 and 48,090.95 is: 66,364.17
Step by Step Solution
- Step 1: Write the proportion equation
88,378.12 : 121,959.35 = 48,090.95 : x - Step 2: Convert to fraction form
88,378.12/121,959.35 = 48,090.95/x - Step 3: Cross multiply
88,378.12x = 121,959.35 × 48,090.95 - Step 4: Simplify right side
88,378.12x = 5,865,141,002.88 - Step 5: Solve for x
x = 5,865,141,002.88/88,378.12 - Step 6: Final answer
x = 66,364.17
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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.