Finding the Fourth Proportional to 88,133.49, 121,643.40 and 54,159.80
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Solution
The fourth proportional to 88,133.49, 121,643.40 and 54,159.80 is: 74,752.31
Step by Step Solution
- Step 1: Write the proportion equation
88,133.49 : 121,643.40 = 54,159.80 : x - Step 2: Convert to fraction form
88,133.49/121,643.40 = 54,159.80/x - Step 3: Cross multiply
88,133.49x = 121,643.40 × 54,159.80 - Step 4: Simplify right side
88,133.49x = 6,588,181,607.10 - Step 5: Solve for x
x = 6,588,181,607.10/88,133.49 - Step 6: Final answer
x = 74,752.31
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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.