Finding the Fourth Proportional to 83,455.60, 115,130.08 and 73,905.20
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Solution
The fourth proportional to 83,455.60, 115,130.08 and 73,905.20 is: 101,954.95
Step by Step Solution
- Step 1: Write the proportion equation
83,455.60 : 115,130.08 = 73,905.20 : x - Step 2: Convert to fraction form
83,455.60/115,130.08 = 73,905.20/x - Step 3: Cross multiply
83,455.60x = 115,130.08 × 73,905.20 - Step 4: Simplify right side
83,455.60x = 8,508,711,588.42 - Step 5: Solve for x
x = 8,508,711,588.42/83,455.60 - Step 6: Final answer
x = 101,954.95
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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.