Finding the Fourth Proportional to 74,515,135.98, 102,813,297.40 and 62,639,101.92
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Solution
The fourth proportional to 74,515,135.98, 102,813,297.40 and 62,639,101.92 is: 86,427,173.88
Step by Step Solution
- Step 1: Write the proportion equation
74,515,135.98 : 102,813,297.40 = 62,639,101.92 : x - Step 2: Convert to fraction form
74,515,135.98/102,813,297.40 = 62,639,101.92/x - Step 3: Cross multiply
74,515,135.98x = 102,813,297.40 × 62,639,101.92 - Step 4: Simplify right side
74,515,135.98x = 6,440,132,613,742,609 - Step 5: Solve for x
x = 6,440,132,613,742,609/74,515,135.98 - Step 6: Final answer
x = 86,427,173.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.