Finding the Fourth Proportional to 83,987.74, 125,937.87 and 31,353.94
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Solution
The fourth proportional to 83,987.74, 125,937.87 and 31,353.94 is: 47,014.58
Step by Step Solution
- Step 1: Write the proportion equation
83,987.74 : 125,937.87 = 31,353.94 : x - Step 2: Convert to fraction form
83,987.74/125,937.87 = 31,353.94/x - Step 3: Cross multiply
83,987.74x = 125,937.87 × 31,353.94 - Step 4: Simplify right side
83,987.74x = 3,948,648,419.71 - Step 5: Solve for x
x = 3,948,648,419.71/83,987.74 - Step 6: Final answer
x = 47,014.58
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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.