Finding the Fourth Proportional to 74,979.98, 103,472.57 and 40,988.87
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Solution
The fourth proportional to 74,979.98, 103,472.57 and 40,988.87 is: 56,564.75
Step by Step Solution
- Step 1: Write the proportion equation
74,979.98 : 103,472.57 = 40,988.87 : x - Step 2: Convert to fraction form
74,979.98/103,472.57 = 40,988.87/x - Step 3: Cross multiply
74,979.98x = 103,472.57 × 40,988.87 - Step 4: Simplify right side
74,979.98x = 4,241,223,305.41 - Step 5: Solve for x
x = 4,241,223,305.41/74,979.98 - Step 6: Final answer
x = 56,564.75
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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.