Finding the Fourth Proportional to 83,572.12, 115,339.02 and 58,071.70
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Solution
The fourth proportional to 83,572.12, 115,339.02 and 58,071.70 is: 80,145.54
Step by Step Solution
- Step 1: Write the proportion equation
83,572.12 : 115,339.02 = 58,071.70 : x - Step 2: Convert to fraction form
83,572.12/115,339.02 = 58,071.70/x - Step 3: Cross multiply
83,572.12x = 115,339.02 × 58,071.70 - Step 4: Simplify right side
83,572.12x = 6,697,932,967.73 - Step 5: Solve for x
x = 6,697,932,967.73/83,572.12 - Step 6: Final answer
x = 80,145.54
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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.