Finding the Fourth Proportional to 86,813.80, 130,220.70 and 63,485.80
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Solution
The fourth proportional to 86,813.80, 130,220.70 and 63,485.80 is: 95,228.70
Step by Step Solution
- Step 1: Write the proportion equation
86,813.80 : 130,220.70 = 63,485.80 : x - Step 2: Convert to fraction form
86,813.80/130,220.70 = 63,485.80/x - Step 3: Cross multiply
86,813.80x = 130,220.70 × 63,485.80 - Step 4: Simplify right side
86,813.80x = 8,267,165,316.06 - Step 5: Solve for x
x = 8,267,165,316.06/86,813.80 - Step 6: Final answer
x = 95,228.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.