Finding the Fourth Proportional to 90,717,270.40, 136,075,905.60 and 54,437,564.80
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Solution
The fourth proportional to 90,717,270.40, 136,075,905.60 and 54,437,564.80 is: 81,656,347.20
Step by Step Solution
- Step 1: Write the proportion equation
90,717,270.40 : 136,075,905.60 = 54,437,564.80 : x - Step 2: Convert to fraction form
90,717,270.40/136,075,905.60 = 54,437,564.80/x - Step 3: Cross multiply
90,717,270.40x = 136,075,905.60 × 54,437,564.80 - Step 4: Simplify right side
90,717,270.40x = 7,407,640,928,818,682 - Step 5: Solve for x
x = 7,407,640,928,818,682/90,717,270.40 - Step 6: Final answer
x = 81,656,347.20
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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.