Finding the Fourth Proportional to 42,427,270.40, 63,640,905.60 and 15,497,427.20
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Solution
The fourth proportional to 42,427,270.40, 63,640,905.60 and 15,497,427.20 is: 23,246,140.80
Step by Step Solution
- Step 1: Write the proportion equation
42,427,270.40 : 63,640,905.60 = 15,497,427.20 : x - Step 2: Convert to fraction form
42,427,270.40/63,640,905.60 = 15,497,427.20/x - Step 3: Cross multiply
42,427,270.40x = 63,640,905.60 × 15,497,427.20 - Step 4: Simplify right side
42,427,270.40x = 986,270,301,478,072.25 - Step 5: Solve for x
x = 986,270,301,478,072.25/42,427,270.40 - Step 6: Final answer
x = 23,246,140.80
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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.