Finding the Fourth Proportional to 92,720.14, 127,970.18 and 54,479.68
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Solution
The fourth proportional to 92,720.14, 127,970.18 and 54,479.68 is: 75,191.59
Step by Step Solution
- Step 1: Write the proportion equation
92,720.14 : 127,970.18 = 54,479.68 : x - Step 2: Convert to fraction form
92,720.14/127,970.18 = 54,479.68/x - Step 3: Cross multiply
92,720.14x = 127,970.18 × 54,479.68 - Step 4: Simplify right side
92,720.14x = 6,971,774,775.87 - Step 5: Solve for x
x = 6,971,774,775.87/92,720.14 - Step 6: Final answer
x = 75,191.59
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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.