Finding the Fourth Proportional to 98,867.28, 136,449.84 and 56,434.08
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Solution
The fourth proportional to 98,867.28, 136,449.84 and 56,434.08 is: 77,886.45
Step by Step Solution
- Step 1: Write the proportion equation
98,867.28 : 136,449.84 = 56,434.08 : x - Step 2: Convert to fraction form
98,867.28/136,449.84 = 56,434.08/x - Step 3: Cross multiply
98,867.28x = 136,449.84 × 56,434.08 - Step 4: Simplify right side
98,867.28x = 7,700,421,186.55 - Step 5: Solve for x
x = 7,700,421,186.55/98,867.28 - Step 6: Final answer
x = 77,886.45
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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.