Finding the Fourth Proportional to 28,170,642.36, 42,271,663.86 and 15,216,531.96
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Solution
The fourth proportional to 28,170,642.36, 42,271,663.86 and 15,216,531.96 is: 22,833,278.56
Step by Step Solution
- Step 1: Write the proportion equation
28,170,642.36 : 42,271,663.86 = 15,216,531.96 : x - Step 2: Convert to fraction form
28,170,642.36/42,271,663.86 = 15,216,531.96/x - Step 3: Cross multiply
28,170,642.36x = 42,271,663.86 × 15,216,531.96 - Step 4: Simplify right side
28,170,642.36x = 643,228,124,128,067 - Step 5: Solve for x
x = 643,228,124,128,067/28,170,642.36 - Step 6: Final answer
x = 22,833,278.56
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.