Finding the Fourth Proportional to 42,085,412.80, 63,128,119.20 and 39,747,072.40
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Solution
The fourth proportional to 42,085,412.80, 63,128,119.20 and 39,747,072.40 is: 59,620,608.60
Step by Step Solution
- Step 1: Write the proportion equation
42,085,412.80 : 63,128,119.20 = 39,747,072.40 : x - Step 2: Convert to fraction form
42,085,412.80/63,128,119.20 = 39,747,072.40/x - Step 3: Cross multiply
42,085,412.80x = 63,128,119.20 × 39,747,072.40 - Step 4: Simplify right side
42,085,412.80x = 2,509,157,924,318,230 - Step 5: Solve for x
x = 2,509,157,924,318,230/42,085,412.80 - Step 6: Final answer
x = 59,620,608.60
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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.