Finding the Fourth Proportional to 83,570.07, 115,248.38 and 66,630.63
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Solution
The fourth proportional to 83,570.07, 115,248.38 and 66,630.63 is: 91,887.82
Step by Step Solution
- Step 1: Write the proportion equation
83,570.07 : 115,248.38 = 66,630.63 : x - Step 2: Convert to fraction form
83,570.07/115,248.38 = 66,630.63/x - Step 3: Cross multiply
83,570.07x = 115,248.38 × 66,630.63 - Step 4: Simplify right side
83,570.07x = 7,679,071,832.73 - Step 5: Solve for x
x = 7,679,071,832.73/83,570.07 - Step 6: Final answer
x = 91,887.82
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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.