Finding the Fourth Proportional to 97,801.12, 134,968.76 and 55,358.74
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Solution
The fourth proportional to 97,801.12, 134,968.76 and 55,358.74 is: 76,396.88
Step by Step Solution
- Step 1: Write the proportion equation
97,801.12 : 134,968.76 = 55,358.74 : x - Step 2: Convert to fraction form
97,801.12/134,968.76 = 55,358.74/x - Step 3: Cross multiply
97,801.12x = 134,968.76 × 55,358.74 - Step 4: Simplify right side
97,801.12x = 7,471,700,492.96 - Step 5: Solve for x
x = 7,471,700,492.96/97,801.12 - Step 6: Final answer
x = 76,396.88
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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.