Finding the Fourth Proportional to 92,899.36, 128,305.74 and 62,809.12
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Solution
The fourth proportional to 92,899.36, 128,305.74 and 62,809.12 is: 86,747.32
Step by Step Solution
- Step 1: Write the proportion equation
92,899.36 : 128,305.74 = 62,809.12 : x - Step 2: Convert to fraction form
92,899.36/128,305.74 = 62,809.12/x - Step 3: Cross multiply
92,899.36x = 128,305.74 × 62,809.12 - Step 4: Simplify right side
92,899.36x = 8,058,770,620.35 - Step 5: Solve for x
x = 8,058,770,620.35/92,899.36 - Step 6: Final answer
x = 86,747.32
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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.