Finding the Fourth Proportional to 77,056.06, 106,308.05 and 56,961.17
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Solution
The fourth proportional to 77,056.06, 106,308.05 and 56,961.17 is: 78,584.75
Step by Step Solution
- Step 1: Write the proportion equation
77,056.06 : 106,308.05 = 56,961.17 : x - Step 2: Convert to fraction form
77,056.06/106,308.05 = 56,961.17/x - Step 3: Cross multiply
77,056.06x = 106,308.05 × 56,961.17 - Step 4: Simplify right side
77,056.06x = 6,055,431,316.59 - Step 5: Solve for x
x = 6,055,431,316.59/77,056.06 - Step 6: Final answer
x = 78,584.75
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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.