Finding the Fourth Proportional to 85,657.83, 118,209.38 and 47,931.99
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Solution
The fourth proportional to 85,657.83, 118,209.38 and 47,931.99 is: 66,147.02
Step by Step Solution
- Step 1: Write the proportion equation
85,657.83 : 118,209.38 = 47,931.99 : x - Step 2: Convert to fraction form
85,657.83/118,209.38 = 47,931.99/x - Step 3: Cross multiply
85,657.83x = 118,209.38 × 47,931.99 - Step 4: Simplify right side
85,657.83x = 5,666,010,580.41 - Step 5: Solve for x
x = 5,666,010,580.41/85,657.83 - Step 6: Final answer
x = 66,147.02
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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.