Finding the Fourth Proportional to 93,689.79, 129,295.21 and 53,397.05
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Solution
The fourth proportional to 93,689.79, 129,295.21 and 53,397.05 is: 73,689.81
Step by Step Solution
- Step 1: Write the proportion equation
93,689.79 : 129,295.21 = 53,397.05 : x - Step 2: Convert to fraction form
93,689.79/129,295.21 = 53,397.05/x - Step 3: Cross multiply
93,689.79x = 129,295.21 × 53,397.05 - Step 4: Simplify right side
93,689.79x = 6,903,982,627.10 - Step 5: Solve for x
x = 6,903,982,627.10/93,689.79 - Step 6: Final answer
x = 73,689.81
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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.