Finding the Fourth Proportional to 40,564,675.87, 55,979,447.60 and 21,979,811.09
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Solution
The fourth proportional to 40,564,675.87, 55,979,447.60 and 21,979,811.09 is: 30,332,244.92
Step by Step Solution
- Step 1: Write the proportion equation
40,564,675.87 : 55,979,447.60 = 21,979,811.09 : x - Step 2: Convert to fraction form
40,564,675.87/55,979,447.60 = 21,979,811.09/x - Step 3: Cross multiply
40,564,675.87x = 55,979,447.60 × 21,979,811.09 - Step 4: Simplify right side
40,564,675.87x = 1,230,417,683,365,452 - Step 5: Solve for x
x = 1,230,417,683,365,452/40,564,675.87 - Step 6: Final answer
x = 30,332,244.92
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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.