Finding the Fourth Proportional to 90,135,323.21, 135,357,710.43 and 55,324,848.20
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Solution
The fourth proportional to 90,135,323.21, 135,357,710.43 and 55,324,848.20 is: 83,082,242.51
Step by Step Solution
- Step 1: Write the proportion equation
90,135,323.21 : 135,357,710.43 = 55,324,848.20 : x - Step 2: Convert to fraction form
90,135,323.21/135,357,710.43 = 55,324,848.20/x - Step 3: Cross multiply
90,135,323.21x = 135,357,710.43 × 55,324,848.20 - Step 4: Simplify right side
90,135,323.21x = 7,488,644,781,818,796 - Step 5: Solve for x
x = 7,488,644,781,818,796/90,135,323.21 - Step 6: Final answer
x = 83,082,242.51
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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.