Finding the Fourth Proportional to 74,903.36, 103,365.84 and 40,911.76
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Solution
The fourth proportional to 74,903.36, 103,365.84 and 40,911.76 is: 56,457.79
Step by Step Solution
- Step 1: Write the proportion equation
74,903.36 : 103,365.84 = 40,911.76 : x - Step 2: Convert to fraction form
74,903.36/103,365.84 = 40,911.76/x - Step 3: Cross multiply
74,903.36x = 103,365.84 × 40,911.76 - Step 4: Simplify right side
74,903.36x = 4,228,878,438.28 - Step 5: Solve for x
x = 4,228,878,438.28/74,903.36 - Step 6: Final answer
x = 56,457.79
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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.