Finding the Fourth Proportional to 77,515.18, 106,958.07 and 45,679.75
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Solution
The fourth proportional to 77,515.18, 106,958.07 and 45,679.75 is: 63,030.46
Step by Step Solution
- Step 1: Write the proportion equation
77,515.18 : 106,958.07 = 45,679.75 : x - Step 2: Convert to fraction form
77,515.18/106,958.07 = 45,679.75/x - Step 3: Cross multiply
77,515.18x = 106,958.07 × 45,679.75 - Step 4: Simplify right side
77,515.18x = 4,885,817,630.69 - Step 5: Solve for x
x = 4,885,817,630.69/77,515.18 - Step 6: Final answer
x = 63,030.46
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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.