Finding the Fourth Proportional to 42,531,772.80, 63,797,659.20 and 19,814,966.40
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Solution
The fourth proportional to 42,531,772.80, 63,797,659.20 and 19,814,966.40 is: 29,722,449.60
Step by Step Solution
- Step 1: Write the proportion equation
42,531,772.80 : 63,797,659.20 = 19,814,966.40 : x - Step 2: Convert to fraction form
42,531,772.80/63,797,659.20 = 19,814,966.40/x - Step 3: Cross multiply
42,531,772.80x = 63,797,659.20 × 19,814,966.40 - Step 4: Simplify right side
42,531,772.80x = 1,264,148,473,446,650.75 - Step 5: Solve for x
x = 1,264,148,473,446,650.75/42,531,772.80 - Step 6: Final answer
x = 29,722,449.60
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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.