Finding the Fourth Proportional to 77,258.70, 115,909.92 and 29,888.28
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Solution
The fourth proportional to 77,258.70, 115,909.92 and 29,888.28 is: 44,840.88
Step by Step Solution
- Step 1: Write the proportion equation
77,258.70 : 115,909.92 = 29,888.28 : x - Step 2: Convert to fraction form
77,258.70/115,909.92 = 29,888.28/x - Step 3: Cross multiply
77,258.70x = 115,909.92 × 29,888.28 - Step 4: Simplify right side
77,258.70x = 3,464,348,143.74 - Step 5: Solve for x
x = 3,464,348,143.74/77,258.70 - Step 6: Final answer
x = 44,840.88
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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.