Finding the Fourth Proportional to 76,854.84, 106,059.87 and 42,865.53
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Solution
The fourth proportional to 76,854.84, 106,059.87 and 42,865.53 is: 59,154.53
Step by Step Solution
- Step 1: Write the proportion equation
76,854.84 : 106,059.87 = 42,865.53 : x - Step 2: Convert to fraction form
76,854.84/106,059.87 = 42,865.53/x - Step 3: Cross multiply
76,854.84x = 106,059.87 × 42,865.53 - Step 4: Simplify right side
76,854.84x = 4,546,312,166.97 - Step 5: Solve for x
x = 4,546,312,166.97/76,854.84 - Step 6: Final answer
x = 59,154.53
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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.