Finding the Fourth Proportional to 90,497.70, 135,746.55 and 37,901.70
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Solution
The fourth proportional to 90,497.70, 135,746.55 and 37,901.70 is: 56,852.55
Step by Step Solution
- Step 1: Write the proportion equation
90,497.70 : 135,746.55 = 37,901.70 : x - Step 2: Convert to fraction form
90,497.70/135,746.55 = 37,901.70/x - Step 3: Cross multiply
90,497.70x = 135,746.55 × 37,901.70 - Step 4: Simplify right side
90,497.70x = 5,145,025,014.14 - Step 5: Solve for x
x = 5,145,025,014.14/90,497.70 - Step 6: Final answer
x = 56,852.55
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Double scale
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Similar ratio
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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.