Finding the Fourth Proportional to 97,512.80, 134,560.68 and 57,228.20
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Solution
The fourth proportional to 97,512.80, 134,560.68 and 57,228.20 is: 78,970.82
Step by Step Solution
- Step 1: Write the proportion equation
97,512.80 : 134,560.68 = 57,228.20 : x - Step 2: Convert to fraction form
97,512.80/134,560.68 = 57,228.20/x - Step 3: Cross multiply
97,512.80x = 134,560.68 × 57,228.20 - Step 4: Simplify right side
97,512.80x = 7,700,665,507.18 - Step 5: Solve for x
x = 7,700,665,507.18/97,512.80 - Step 6: Final answer
x = 78,970.82
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1.5x scale
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.