Finding the Fourth Proportional to 85,497.68, 128,248.68 and 40,508.48
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Solution
The fourth proportional to 85,497.68, 128,248.68 and 40,508.48 is: 60,763.74
Step by Step Solution
- Step 1: Write the proportion equation
85,497.68 : 128,248.68 = 40,508.48 : x - Step 2: Convert to fraction form
85,497.68/128,248.68 = 40,508.48/x - Step 3: Cross multiply
85,497.68x = 128,248.68 × 40,508.48 - Step 4: Simplify right side
85,497.68x = 5,195,159,088.81 - Step 5: Solve for x
x = 5,195,159,088.81/85,497.68 - Step 6: Final answer
x = 60,763.74
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.