Finding the Fourth Proportional to 83,415.63, 115,165.86 and 64,259.34
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Solution
The fourth proportional to 83,415.63, 115,165.86 and 64,259.34 is: 88,718.17
Step by Step Solution
- Step 1: Write the proportion equation
83,415.63 : 115,165.86 = 64,259.34 : x - Step 2: Convert to fraction form
83,415.63/115,165.86 = 64,259.34/x - Step 3: Cross multiply
83,415.63x = 115,165.86 × 64,259.34 - Step 4: Simplify right side
83,415.63x = 7,400,482,154.13 - Step 5: Solve for x
x = 7,400,482,154.13/83,415.63 - Step 6: Final answer
x = 88,718.17
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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.