Finding the Fourth Proportional to 55,609,911.80, 83,414,867.70 and 47,211,831.80
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Solution
The fourth proportional to 55,609,911.80, 83,414,867.70 and 47,211,831.80 is: 70,817,747.70
Step by Step Solution
- Step 1: Write the proportion equation
55,609,911.80 : 83,414,867.70 = 47,211,831.80 : x - Step 2: Convert to fraction form
55,609,911.80/83,414,867.70 = 47,211,831.80/x - Step 3: Cross multiply
55,609,911.80x = 83,414,867.70 × 47,211,831.80 - Step 4: Simplify right side
55,609,911.80x = 3,938,168,703,471,653 - Step 5: Solve for x
x = 3,938,168,703,471,653/55,609,911.80 - Step 6: Final answer
x = 70,817,747.70
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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.