Finding the Fourth Proportional to 72,709.70, 101,862.70 and 72,709.70
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Solution
The fourth proportional to 72,709.70, 101,862.70 and 72,709.70 is: 101,862.70
Step by Step Solution
- Step 1: Write the proportion equation
72,709.70 : 101,862.70 = 72,709.70 : x - Step 2: Convert to fraction form
72,709.70/101,862.70 = 72,709.70/x - Step 3: Cross multiply
72,709.70x = 101,862.70 × 72,709.70 - Step 4: Simplify right side
72,709.70x = 7,406,406,358.19 - Step 5: Solve for x
x = 7,406,406,358.19/72,709.70 - Step 6: Final answer
x = 101,862.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.