Finding the Fourth Proportional to 86,709.74, 130,062.76 and 39,962.62
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Solution
The fourth proportional to 86,709.74, 130,062.76 and 39,962.62 is: 59,943.07
Step by Step Solution
- Step 1: Write the proportion equation
86,709.74 : 130,062.76 = 39,962.62 : x - Step 2: Convert to fraction form
86,709.74/130,062.76 = 39,962.62/x - Step 3: Cross multiply
86,709.74x = 130,062.76 × 39,962.62 - Step 4: Simplify right side
86,709.74x = 5,197,648,209.89 - Step 5: Solve for x
x = 5,197,648,209.89/86,709.74 - Step 6: Final answer
x = 59,943.07
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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.