Finding the Fourth Proportional to 83,655.12, 115,444.26 and 45,931.80
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Solution
The fourth proportional to 83,655.12, 115,444.26 and 45,931.80 is: 63,385.99
Step by Step Solution
- Step 1: Write the proportion equation
83,655.12 : 115,444.26 = 45,931.80 : x - Step 2: Convert to fraction form
83,655.12/115,444.26 = 45,931.80/x - Step 3: Cross multiply
83,655.12x = 115,444.26 × 45,931.80 - Step 4: Simplify right side
83,655.12x = 5,302,562,661.47 - Step 5: Solve for x
x = 5,302,562,661.47/83,655.12 - Step 6: Final answer
x = 63,385.99
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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.