Finding the Fourth Proportional to 83,657.84, 115,440.63 and 47,842.07
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Solution
The fourth proportional to 83,657.84, 115,440.63 and 47,842.07 is: 66,017.95
Step by Step Solution
- Step 1: Write the proportion equation
83,657.84 : 115,440.63 = 47,842.07 : x - Step 2: Convert to fraction form
83,657.84/115,440.63 = 47,842.07/x - Step 3: Cross multiply
83,657.84x = 115,440.63 × 47,842.07 - Step 4: Simplify right side
83,657.84x = 5,522,918,701.30 - Step 5: Solve for x
x = 5,522,918,701.30/83,657.84 - Step 6: Final answer
x = 66,017.95
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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.