Finding the Fourth Proportional to 83,959.80, 115,861.44 and 47,656.12
Calculator
Solution
The fourth proportional to 83,959.80, 115,861.44 and 47,656.12 is: 65,763.70
Step by Step Solution
- Step 1: Write the proportion equation
83,959.80 : 115,861.44 = 47,656.12 : x - Step 2: Convert to fraction form
83,959.80/115,861.44 = 47,656.12/x - Step 3: Cross multiply
83,959.80x = 115,861.44 × 47,656.12 - Step 4: Simplify right side
83,959.80x = 5,521,506,688.01 - Step 5: Solve for x
x = 5,521,506,688.01/83,959.80 - Step 6: Final answer
x = 65,763.70
Related Problems
Find fourth proportional to 41,979.90, 57,930.72 and 23,828.06
Half scale
Find fourth proportional to 167,919.60, 231,722.88 and 95,312.24
Double scale
Find fourth proportional to 83,960.80, 115,862.82 and 47,657.12
Similar ratio
Find fourth proportional to 125,939.70, 173,792.16 and 71,484.18
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.